Heteroaryl-substituted 1,3-dihydroindol-2-one derivatives and medicaments containing them

ABSTRACT

The present invention relates to novel 1,3-dihydroindol-2-one (oxindole) derivatives of the formula (I) in which A, R 3 , R 4 , R 5  R 6  and R 7  are defined according to claim 1, and to medicaments containing them for the treatment of diseases. In particular, the novel oxindole derivatives can be used for the control and/or prophylaxis of various vasopressin-dependent or oxytocin-dependent diseases.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is the National Stage application of international application PCT/EP2004/010940 filed Sep. 30, 2004, which claims priority of U.S. patent application 10/675,300 filed Sep. 30, 2003.

The present invention relates to novel 1,3-dihydroindol-2-one (oxindole) derivatives and to medicaments containing them for the treatment of diseases.

The role of vasopressin in various pathological states has been the subject of intensive research in recent years, and the selective antagonism of the various vasopressin receptors opens up novel clinical prospects. At present, three receptors (V1a, V1b or V3 and V2) by which vasopressin mediates its effect are known. In contrast to the other two receptors, the vasopressin V1b receptor is mainly found in the CNS. This suggests that in particular CNS effects of vasopressin are mediated by the V1b receptor. Thus, it has also been found that an antagonist of the V1b receptor shows anxiolytic and antidepressant effects (Griebel et al., PNAS 99, 6370 (2002); Serradeil-Le Gal et al., J. Pharm. Exp. Ther. 300, 1122 (2002)). Since the models used allow a certain forecast of a clinical effect, antagonists of the vasopressin V1b receptor might be useful for the treatment of emotional disturbances, e.g. stress, anxiety and depression.

WO 93/15051 and WO 98/25901 have already described 1-phenylsulfonyl-1,3-dihydro-2H-indol-2-ones in which the oxindole framework is substituted in position 3 by two alkyl radicals, which may also be a cycloalkyl radical (spiro linkage), as ligands of vasopressin receptors. An alternative possibility is for the spiro ring to contain heteroatoms such as oxygen and nitrogen (optionally with substituents).

WO 95/18105 describes 1-phenylsulfonyl-1,3-dihydro-2H-indol-2-ones which have a nitrogen atom in position 3 as ligands of vasopressin receptors. Additionally bonded in position 3 are radicals which may be alkyl, cycloalkyl, phenyl or benzyl radicals (optionally with substituents in each case).

Other publications describe compounds which have nitrogen-containing rings (e.g. proline, homoproline, morpholine, tetrahydroisoquinoline, dihydroindole; optionally with substituents in each case) bonded via their nitrogen atom to position 3 of the oxindole framework, but which have phenylsulfonyl or phenyl radicals (optionally with substituents) both in position 1 and position 3 on the oxindole ring.

The object of the present invention is to provide additional compounds for the treatment or prophylaxis of various vasopressin-dependent or oxytocin-dependent diseases which have high activity.

The object has been achieved by a compound of the formula (I)

in which

-   A is an aromatic heteromonocyclic, or an aromatic or partially     aromatic heterobicyclic ring,     -   where the heterocycles are 5- or 6-membered rings and comprise         up to 4 heteroatoms selected from the group consisting of N, O         and S, and up to 2 oxo groups, where not more than one of the         heteroatoms is an oxygen atom,     -   and A may be substituted by radicals R¹¹, R¹² and/or R¹³,     -   where     -   R¹¹, R¹² and R¹³ at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl,         C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl)         and N(C₁-C₄-alkyl)₂, -   R³ and R⁴ are selected independently of one another from the group     consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,     CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl,     phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,     NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, or -   R³ and R⁴ are connected to give —CH═CH—CH═CH—, —(CH₂)₄— or —(CH₂)₃—, -   R⁵ is a radical (W)—(X)—(Y)—Z, where     -   W is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, O, O-(C₁-C₄-alkylen), S,         S-(C₁-C₄-alkylen), NR⁵⁴, NR⁵⁴-(C₁-C₄-alkylen) and a bond,     -   X is selected from the group consisting of CO, CO—O, SO₂, NR⁵⁴,         NR⁵⁴—CO, NR⁵⁴—SO₂, CO—NR⁵⁸ and a bond,     -   Y is C₁-C₆-alkylen, C₂-C₆-alkenylen, C₂-C₆-alkynylen, or a bond,     -   Z is selected from the group consisting of hydrogen, E, O—R⁵²,         NR⁵¹R⁵², S—R⁵², where     -   E is an unsaturated, saturated or partially unsaturated mono-,         bi- or tricyclic ring having a maximum of 14 carbon atoms and 0         to 5 nitrogen atoms, 0 to 2 oxygen atoms and/or 0 to 2 sulfur         atoms, said ring may comprise up to two oxo groups, and may be         substituted by radicals R⁵⁵, R⁵⁶, R⁵⁷, and/or up to three         radicals R⁵³,     -   R⁵¹ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵³,     -   R⁵² at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, E and C₁-C₄-alkylen-E,     -   R⁵³ at each occurrence is independently selected from the group         consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,         CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁵⁴ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵⁹,     -   R⁵⁵ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl, C₁-C₄-alkylen-phenyl, where the ring may         be substituted by up to two radicals R⁶⁰, and OH, O-C₁-C₄-alkyl,         O-phenyl, O-C₁-C₄-alkylen-phenyl, NH₂, NH(C₁-C₄-alkyl) and         N(C₁-C₄-alkyl)₂,     -   R⁵⁶ at each occurrence is independently a group Q¹-Q²-Q³, where     -   Q¹ is selected from the group consisting of a bond,         C₁-C₄-alkylen, C₂-C₄-alkenylen, C₂-C₄-alkynylen,         C₁-C₄-alkylen-N(C₁-C₄-alkyl), N(C₁-C₄-alkyl), C₁-C₄-alkylen-NH,         NH, N(C₁-C₄-alkyl)-C₁-C₄-alkylen, NH-C₁-C₄-alkylen, O,         C₁-C₄-alkylen-O, O-C₁-C₄-alkylen, CO—NH, CO—N(C₁-C₄-alkyl),         NH—CO, N(C₁-C₄-alkyl)-CO, CO, SO₂, SO, S, O, SO₂—NH,         SO₂—N(C₁-C₄-alkyl), NH—SO₂, N(C₁-C₄-alkyl)-SO₂, O—CO—NH,         O—CO—N(C₁-C₄-alkyl), NH—CO—O, N(C₁-C₄-alkyl)-CO—O,         N(C₁-C₄-alkyl)-CO—N(C₁-C₄-alkyl), NH—CO—N(C₁-C₄-alkyl),         N(C₁-C₄-alkyl)-CO—NH, and NH—CO—NH,     -   Q² is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, and a bond,     -   Q³ is a hydrogen or an unsaturated, saturated or partially         unsaturated mono-, bi- or tricyclic ring having a maximum of 14         carbon atoms and 0 to 5 nitrogen atoms, 0 to 2 oxygen atoms         and/or 0 to 2 sulfur atoms, which may comprise up to two oxo         groups and may be substituted by the radicals R⁶³, R⁶⁴ and/or         R⁶⁵,     -   R⁵⁷ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, phenyl,         C₁-C₄-alkylen-phenyl, COOH, CO—O-C₁-C₄-alkyl, CONH₂,         CO—NH-C₁-C₄-alkyl, CO—N(C₁-C₄-alkyl)₂, CO—C₁-C₄-alkyl, CH₂—NH₂,         CH₂—NH-C₁-C₄-alkyl and CH₂—N(C₁-C₄-alkyl)₂,     -   R⁵⁸ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁶²,     -   R⁵⁹, R⁶⁰ and R⁶² at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,         NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁶³, R⁶⁴ and R⁶⁵ at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl,         C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl)         and N(C₁-C₄-alkyl)₂, -   R⁶ and R⁷ are selected independently of one another from the group     consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,     CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl,     phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,     NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     and their tautomeric forms, enantiomeric and diastereomeric forms,     and prodrugs thereof.

Ring A is preferably selected from the group consisting of aromatic heteromonocyclic and aromatic heterobicyclic systems comprising 1 or 2 heteroatoms, where one of the 2 heteroatoms is nitrogen, more preferably from benzothiazole, pyrimidine, pyridine, pyridazine, pyrazine, isoquinoline, quinoline, thiazole, benzimidazole, imidazole, benzoxazole, benzothiophene, thiophene, benzofuran and furan.

In a more preferred embodiment ring A is selected from the group consisting of pyridine, pyrimidine, pyrazine, thiophene, benzofuran and benzothiazole.

In a further preferred embodiment of the compound of formula (I), R¹¹ and R¹² are selected independently of one another from the group consisting of fluorine, chlorine, OH, O-C₁-C₄-alkyl and C₁-C₄-alkyl. More preferably, R¹¹ and/or R¹² are independently of one another methyl, methoxy or ethoxy.

Examples of ring A, substituted by R¹¹ and/or R¹², in the compound of formula (I) are 2-methoxypyridine-3-yl, 2-ethoxypyridine-3-yl, 2-hydroxypyridine-3-yl, 2,4-dimethoxypyrimidine-5-yl, 2,6-dimethoxypyridine-3-yl, 3-methoxypyridine-2-yl, 3-methoxypyridine-4-yl, 4-methoxypyridine-3-yl, 3-methoxypyrazine-2-yl, 3-methylthiophen-2-yl, 3-methylpyridin-2-yl, pyridin-2-yl or 6-chlor-2-methoxypyridin-3-yl, preferably 2-methoxypyridine-3-yl, 2-ethoxypyridine-3-yl, 2,4-dimethoxy-pyrimidine-5-yl or 2,6-dimethoxypyridine-3-yl, and more preferably 2-methoxypyridine-3-yl.

In case of R¹¹ or R¹² being OH, the resultant substituted ring A may predominantly be present in form of its tautomer like, for example, 1,2-dihydro-2-oxopyridine-3-yl.

In a further preferred embodiment of the compounds of formulae (I) R⁶ and R⁷ are independently of one another hydrogen, fluorine, chlorine, bromine, iodine, C₁-C₄-alkyl, O-C₁-C₄-alkyl, CN, CF₃ or OCF₃, preferably hydrogen, fluorine, chlorine, methyl, methoxy, ethoxy or CN.

Furthermore, for the compounds of formula (I) R⁶ is preferably hydrogen, methoxy, methyl, F, Cl or CN and/or R⁷ is preferably hydrogen, methoxy, methyl, F or Cl.

The present application additionally relates to a compound of the formula (II)

in which

-   B is selected from the group consisting of thiophene, furan,     pyrrole, pyridine, quinoline, tetrahydroquinoline, isoquinoline,     tetrahydroisoquinoline, benzothiophene, benzofuran,     dihydrobenzofuran, indole, dihydroisoindole, -   an aromatic heteromonocyclic and an aromatic or partially aromatic     heterobicyclic ring,     -   where the heterocycles are 5- or 6-membered rings and comprise 2         to 4 heteroatoms selected from the group consisting of N, O and         S, and up to 2 oxo groups, and     -   B may be substituted by the radicals R²¹, R²² and/or R²³,     -   R²¹, R²² and R²³ at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl,         C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl)         and N(C₁-C₄-alkyl)₂, morpholin-4-yl, pyrrolidin-1-yl,         piperidin-1-yl, 4-piperazin-1-yl,         4-(C₁-C₄-alkyl)-piperazin-1-yl, -   R³ and R⁴ are selected independently of one another from the group     consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,     CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl,     phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,     NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, or -   R³ and R⁴ are connected to give —CH═CH—CH═CH—, —(CH₂)₄— or —(CH₂)₃—, -   R⁵ is a radical (W)—(X)—(Y)—Z, where     -   W is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, O, O-(C₁-C₄-alkylen), S,         S-(C₁-C₄-alkylen), NR⁵⁴, NR⁵⁴-(C₁-C₄-alkylen) and a bond,     -   X is selected from the group consisting of CO, CO—O, SO₂, NR⁵⁴,         NR⁵⁴—CO, NR⁵⁴—SO₂, CO—NR⁵⁸ and a bond,     -   Y is C₁-C₆-alkylen, C₂-C₆-alkenylen, C₂-C₆-alkynylen, or a bond,     -   Z is selected from the group consisting of hydrogen, E, O—R⁵²,         NR⁵¹R⁵², S—R⁵², where     -   E is an unsaturated, saturated or partially unsaturated mono-,         bi- or tricyclic ring having a maximum of 14 carbon atoms and 0         to 5 nitrogen atoms, 0 to 2 oxygen atoms and/or 0 to 2 sulfur         atoms, said ring may comprise up to two oxo groups, and may be         substituted by radicals R⁵⁵, R⁵⁶, R⁵⁷ and/or up to three         radicals R⁵³ and,     -   R⁵¹ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵³,     -   R⁵² at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, E and C₁-C₄-alkylen-E,     -   R⁵³ at each occurrence is independently selected from the group         consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,         CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁵⁴ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵⁹,     -   R⁵⁵ at each occurrence is independently selected from the group         consisting of C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, phenyl,         C₁-C₄-alkylen-phenyl, where the ring may be substituted by up to         two radicals R⁶⁰, and OH, O-C₁-C₄-alkyl, O-phenyl,         O-C₁-C₄-alkylen-phenyl, NH₂, NH(C₁-C₄-alkyl) and         N(C₁-C₄-alkyl)₂,     -   R⁵⁶ is a group Q¹-Q²-Q³, where     -   Q¹ is selected from the group consisting of a bond,         C₁-C₄-alkylen, C₂-C₄-alkenylen, C₂-C₄-alkynylen,         C₁-C₄-alkylen-N(C₁-C₄-alkyl), N(C₁-C₄-alkyl), C₁-C₄-alkylen-NH,         NH, N(C₁-C₄-alkyl)-C₁-C₄-alkylen, NH-C₁-C₄-alkylen, O,         C₁-C₄-alkylen-O, O-C₁-C₄-alkylen, CO—NH, CO—N(C₁-C₄-alkyl),         NH—CO, N(C₁-C₄-alkyl)-CO, CO, SO₂, SO, S, O, SO₂—NH,         SO₂—N(C₁-C₄-alkyl), NH—SO₂, N(C₁-C₄-alkyl)-SO₂, O—CO—NH,         O—CO—N(C₁-C₄-alkyl), NH—CO—O, N(C₁-C₄-alkyl)-CO—O,         N(C₁-C₄-alkyl)-CO—N(C₁-C₄-alkyl), NH—CO—N(C₁-C₄-alkyl),         N(C₁-C₄-alkyl)-CO—NH, and NH—CO—NH,     -   Q² is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, and a bond,     -   Q³ is a hydrogen or an unsaturated, saturated or partially         unsaturated mono-, bi- or tricyclic ring having a maximum of 14         carbon atoms and 0 to 5 nitrogen atoms, 0 to 2 oxygen atoms         and/or 0 to 2 sulfur atoms, which may comprise up to two oxo         groups and may be substituted by the radicals R⁶³, R⁶⁴ and/or         R⁶⁵,     -   R⁵⁷ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, phenyl,         C₁-C₄-alkylen-phenyl, COOH, CO—O-C₁-C₄-alkyl, CONH₂,         CO—NH-C₁-C₄-alkyl, CO—N(C₁-C₄-alkyl)₂, CO-C₁-C₄-alkyl, CH₂—NH₂,         CH₂—NH-C₁-C₄-alkyl and CH₂—N(C₁-C₄-alkyl)₂,     -   R⁵⁸ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁶²,     -   R⁵⁹, R⁶⁰ and R⁶² at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,         NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁶³, R⁶⁴ and R⁶⁵ at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl,         C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl)         and N(C₁-C₄-alkyl)₂, -   R⁶ and R⁷ are selected independently of one another from the group     consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,     CF₃, OCF₃, NO₂, OH, O- C₁-C₄-alkyl, O-phenyl,     O-C₁-C₄-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl,     C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     and their tautomeric forms, enantiomeric and diastereomeric forms,     and prodrugs thereof.

Ring B is preferably selected from the group consisting of thiophene, furan, pyrrole, pyrazole, isoxazole, pyridine, pyrimidine, quinoline, isoquinoline, tetrahydroisoquinoline, benzothiophene, benzofuran, indole, imidazole, thiazole, imidazothiazole, benzooxazine and quinoxaline.

In a more preferred embodiment ring B is selected from the group consisting of pyridine, imidazole, thiophene, benzothiophene and quinoline.

Even more preferably, ring B is selected from

In a further preferred embodiment of the compound of formula (II), R²¹ and R²² are selected independently of one another from the group consisting of hydrogen, chlorine, bromine, C₁-C₄-alkyl and O-C₁-C₄-alkyl. Particularly, R²¹ and R²² are independently of one another hydrogen, chlorine, bromine, methyl or methoxy.

In further particularly preferred embodiments, B is

wherein

-   -   R²¹ is selected from methyl, methoxy, chlorine or bromine, and     -   R²² is methyl.

In a further preferred embodiment of the compounds of formula (II) R⁶ and R⁷ are independently of one another hydrogen, fluorine, chlorine, bromine, iodine, C₁-C₄-alkyl, O-C₁-C₄-alkyl, CF₃ or OCF₃, preferably hydrogen, fluorine, chlorine, methyl, ethyl, propyl, i-propyl, methoxy, ethoxy, propoxy, i-propoxy.

For the compounds of formula (II) R⁶ is preferably hydrogen, methoxy, ethoxy, propoxy, i-propoxy, methyl, ethyl, fluorine or chlorine, most preferably methoxy or ethoxy. Further, R⁶ is more preferably in position 2 of the phenyl ring.

For the compounds of formula (II) R⁷ is preferably hydrogen, methoxy, F or Cl, most preferably hydrogen.

The present invention additionally relates to a compound of the formula (III),

in which

-   D is an aromatic heteromonocyclic, or an aromatic or partially     aromatic heterobicyclic ring,     -   where the heterocycles are 5- or 6-membered rings and comprise         up to 4 heteroatoms selected from the group consisting of N, O         and S, and up to 2 oxo groups,     -   and D may be substituted by radicals R²¹, R²² and/or R²³, -   G is an aromatic heteromonocyclic, aromatic or partially aromatic     heterobicyclic ring,     -   where the heterocycles are 5- or 6-membered rings and comprise         up to 4 heteroatoms selected from the group consisting of N, O         and S, and up to 2 oxo groups and     -   G may be substituted by radicals R⁷¹, R⁷² and/or R⁷³,     -   R²¹, R²², R²³, R⁷¹, R⁷² and R⁷³ at each occurrence are selected         independently of one another from the group consisting of         hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃,         NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl,         phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,         NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, morpholin-4-yl,         pyrrolidin-1-yl, piperidin-1-yl, 4-piperazin-1-yl,         4-(C₁-C₄-alkyl)-piperazin-1-yl, -   R³ and R⁴ are selected independently of one another from the group     consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,     CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl,     phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,     NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, or -   R³ and R⁴ are connected to give —CH═CH—CH═CH—, —(CH₂)₄— or —(CH₂)₃—, -   R⁵ is a radical (W)—(X)—(Y)—Z, where     -   W is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, O, O-(C₁-C₄-alkylen), S,         S-(C₁-C₄-alkylen), NR⁵⁴, NR⁵⁴-(C₁-C₄-alkylen) and a bond,     -   X is selected from the group consisting of CO, CO—O, SO₂, NR⁵⁴,         NR⁵⁴—CO, NR⁵⁴—SO₂, CO—NR⁵⁸ and a bond,     -   Y is C₁-C₆-alkylen, C₂-C₆-alkenylen, C₂-C₆-alkynylen, or a bond,     -   Z is selected from the group consisting of hydrogen, E, O—R⁵²,         NR⁵¹R⁵², S—R⁵², where     -   E is an unsaturated, saturated or partially unsaturated mono-,         bi- or tricyclic ring having a maximum of 14 carbon atoms and 0         to 5 nitrogen atoms, 0 to 2 oxygen atoms and/or 0 to 2 sulfur         atoms, which may comprise up to two oxo groups, and E may be         substituted by radicals R⁵⁵, R⁵⁶, R⁵⁷ and/or up to three         radicals R⁵³,     -   R⁵¹ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵³,     -   R⁵² at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, E and C₁-C₄-alkylen-E,     -   R⁵³ at each occurrence is independently selected from the group         consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN,         CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁵⁴ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁵⁹,     -   R⁵⁵ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl, C₁-C₄-alkylen-phenyl, where the ring may         be substituted by up to two radicals R⁶⁰, and OH, O-C₁-C₄-alkyl,         O-phenyl, O-C₁-C₄-alkylen-phenyl, NH₂, NH(C₁-C₄-alkyl) and         N(C₁-C₄-alkyl)₂,     -   R⁵⁶ is a group Q¹-Q²-Q³, where     -   Q¹ is selected from the group consisting of a bond,         C₁-C₄-alkylen, C₂-C₄-alkenylen, C₂-C₄-alkynylen,         C₁-C₄-alkylen-N(C₁-C₄-alkyl), N(C₁-C₄-alkyl), C₁-C₄-alkylen-NH,         NH, N(C₁-C₄-alkyl)-C₁-C₄-alkylen, NH-C₁-C₄-alkylen, O,         C₁-C₄-alkylen-O, O-C₁-C₄-alkylen, CO—NH, CO—N(C₁-C₄-alkyl),         NH—CO, N(C₁-C₄-alkyl)-CO, CO, SO₂, SO, S, O, SO₂—NH,         SO₂—N(C₁-C₄-alkyl), NH—SO₂, N(C₁-C₄-alkyl)-SO₂, O—CO—NH,         O—CO—N(C₁-C₄-alkyl), NH—CO—O, N(C₁-C₄-alkyl)-CO—O,         N(C₁-C₄-alkyl)-CO—N(C₁-C₄-alkyl), NH—CO—N(C₁-C₄-alkyl),         N(C₁-C₄-alkyl)-CO—NH, and NH—CO—NH,     -   Q² is selected from the group consisting of C₁-C₄-alkylen,         C₂-C₄-alkenylen, C₂-C₄-alkynylen, and a bond,     -   Q³ is a hydrogen or an unsaturated, saturated or partially         unsaturated mono-, bi- or tricyclic ring having a maximum of 14         carbon atoms and 0 to 5 nitrogen atoms, 0 to 2 oxygen atoms         and/or 0 to 2 sulfur atoms, which may comprise up to two oxo         groups and may be substituted by the radicals R⁶³, R⁶⁴ and/or         R⁶⁵,     -   R⁵⁷ at each occurrence is independently selected from the group         consisting of C₁-C₆-alkyl, phenyl, C₁-C₄-alkylen-phenyl, COOH,         CO—O-C₁-C₄-alkyl, CONH₂, CO—NH-C₁-C₄-alkyl, CO—N(C₁-C₄-alkyl)₂,         CO-C₁-C₄-alkyl, CH₂—NH₂, CH₂—NH-C₁-C₄-alkyl and         CH₂—N(C₁-C₄-alkyl)₂,     -   R⁵⁸ at each occurrence is independently selected from the group         consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl,         C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl         ring may be substituted by up to two radicals R⁶²,     -   R⁵⁹, R⁶⁰ and R⁶² at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂,         NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂,     -   R⁶³, R⁶⁴ and R⁶⁵ at each occurrence are selected independently         of one another from the group consisting of hydrogen, chlorine,         bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH,         O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl,         C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl)         and N(C₁-C₄-alkyl)₂,         and their tautomeric forms, enantiomeric and diastereomeric         forms, and prodrugs thereof.

Ring D is preferably selected from the group consisting of aromatic heteromonocyclic and aromatic heterobicyclic systems comprising 1 or 2 heteroatoms, where one of the 2 heteroatoms is nitrogen, more preferably from benzothiazole, pyrimidine, pyridine, pyridazine, pyrazine, isoquinoline, quinoline, thiazole, benzimidazole, imidazole, benzoxazole, benzothiophene, thiophene, benzofuran and furan.

In a particularly preferred embodiment ring D is selected from the group consisting of pyridine, pyrimidine, pyrazine, thiophene, benzofuran and benzothiazole.

In a further preferred embodiment of the compound of formula (III) R²¹ and R²² are selected independently of one another from the group consisting of hydroxy, fluorine, chlorine, C₁-C₄-alkyl and O-C₁-C₄-alkyl. Particularly, R²¹ and R²² are independently of one another hydrogen, hydroxy, chlorine, methyl, methoxy or ethoxy, most preferably hydrogen, methyl, methoxy or ethoxy.

Examples of ring D, substituted by R²¹ and/or R²², are 2-methoxypyridine-3-yl, 2-ethoxypyridine-3-yl, 2-hydroxypyridine-3-yl, 2,4-dimethoxypyrimidine-5-yl, 2,6-dimethoxypyridine-3-yl, 3-methoxypyridine-2-yl, 3-methoxypyridine-4-yl, 4-methoxypyridine-3-yl, 3-methoxypyrazine-2-yl, 3-methylthiophen-2-yl, 3-methylpyridin-2-yl, pyridin-2-yl or 6-chlor-2-methoxypyridin-3-yl, preferably 2-methoxypyridine-3-yl, 2-ethoxypyridine-3-yl, 2,4-dimethoxy-pyrimidine-5-yl or 2,6-dimethoxypyridine-3-yl, and more preferably 2-methoxypyridine-3-yl.

In case of R²¹ or R²² being OH, the resultant substituted ring D may predominantly be present in form of its tautomer like, for example, 1,2-dihydro-2-oxopyridine-3-yl.

Ring G is preferably selected from the group consisting of thiophene, furan, pyrrole, pyrazole, isoxazole, pyridine, pyrimidine, quinoline, isoquinoline, tetrahydroisoquinoline, benzothiophene, benzofuran, indole, imidazole, thiazole, imidazothiazole, benzooxazine and quinoxaline.

In a particularly preferred embodiment ring G is selected from the group consisting of imidazole, pyridine, thiophene, benzothiophene and quinoline.

Even more preferably, ring G is selected from

In a further preferred embodiment R⁷¹ and R⁷² are selected independently of one another from the group consisting of C₁-C₄-alkyl, O-C₁-C₄-alkyl, chlorine and bromine. Particularly, R⁷¹ and R⁷² are independently of one another methyl, methoxy, chlorine or bromine.

In a further particularly preferred embodiment ring G is

-   -   wherein         -   R⁷¹ is methyl, methoxy, chlorine or bromine, and         -   R⁷² is methyl.

In preferred embodiments of the compounds of formulae (I), (II) or (III), R³ is selected from the group consisting of hydrogen, C₁₋₄-alkyl, C₂₋₄-alkenyl, C₂₋₄-alkynyl, O-C₁₋₄-alkyl, fluorine, chlorine, bromine, iodine, CN, CF₃ and OCF₃. More preferably, R³ is selected from the group consisting of methyl, methoxy, fluorine, chlorine, bromine, iodine, CN and OCF₃.

Furthermore, in the compounds of formulae (I), (II) or (III) R³ is preferably present in position 5 of the oxindole ring:

R⁴ is in the compounds of formulae (I), (II) or (III) preferably hydrogen.

First Preferred Embodiment of R⁵ in the Compounds of Formulae (I), (II) or (III)

According to this preferred embodiment, R⁵ is a radical (W)—(X)—(Y)—Z as defined in the compounds of formulae (I), (II) or (III) wherein at least one, preferably two, more preferably three and particularly all of W, X, Y and Z have the following definition:

-   -   W is NR⁵⁴-(C₁-C₄-alkylen);     -   X is CO;     -   Y is a bond; and/or     -   Z is E, O—R⁵² or NR⁵¹R⁵².

A preferred combination of W, X, Y and Z results in a group R⁵ having the following definition:

-   -   wherein         -   R⁸¹ is hydrogen or C₁-C₃-alkyl, preferably methyl,         -   R⁸² is hydrogen or C₁-C₃-alkyl, preferably hydrogen or             methyl, and R⁸¹ and R⁸² contain together up to 3 carbon             atoms,         -   E is a saturated monocyclic ring having a maximum of 8,             preferably a maximum of 6 and particularly 4 or 5 carbon             atoms and 0 to 5, preferably 1 or 2 and particularly 1             nitrogen atom, and is preferably connected to the adjacent             carbon atom of the carbonyl group via a nitrogen atom, and         -   R⁵¹, R⁵² and R⁵⁴ are as defined in the compounds of formulae             (I), (II) or (III).

Preferably one, more preferably two and most preferably all of R⁵¹, R⁵² and R⁵⁴ have the following definition:

-   -   R⁵¹ is hydrogen, C₁-C₄-alkyl, preferably methyl;     -   R⁵² is hydrogen, C₁-C₄-alkyl, preferably methyl; and/or     -   R⁵⁴ is hydrogen or C₁-C₄-alkyl, preferably hydrogen or methyl,

In a further preferred embodiment E is azetidine, piperazine, pyrrolidine, piperidine or morpholine.

Furthermore, particularly preferred are combinations of preferred embodiments of the above defined groups in the first preferred embodiment of R⁵.

Second Preferred Embodiment of R⁵ in the Compounds of Formulae (I), (II) or (III)

According to this preferred embodiment, R⁵ is a radical (W)—(X)—(Y)—Z as defined in the compounds of formulae (I), (II) or (III) wherein at least one, preferably two, more preferably three and particularly all of W, X, Y and Z have the following definition:

-   -   W is a bond;     -   X is a bond;     -   Y is a bond; and/or     -   Z is E.

Preferably, E is a saturated or partially unsaturated monocyclic ring having a maximum of 8, preferably a maximum of 6 and particularly 4 or 5 carbon atoms, and 0 to 3, preferably 1 or 2 and particularly 1 nitrogen atom.

In a further preferred embodiment E is azetidine, piperazine, pyrrolidine or piperidine.

In a further preferred embodiment E is piperidine bonded to Z via the ring nitrogen atom.

In one preferred embodiment E is unsubstituted.

In another preferred embodiment E is substituted by one or two radicals R⁵³, with R⁵³ being defined as in the compounds of formulae (I), (II) or (III). More preferably R⁵³ is fluorine, OH, C₁-C₄-alkyl, O-C₁-C₄-alkyl or CN, more preferably fluorine, OH, methyl or methoxy and most preferably fluorine or OH. In a further preferred embodiment E is substituted by two radicals R⁵³ in geminal position, particularly with R⁵³ being fluorine.

In a further preferred embodiment E is substituted by one radical R⁵⁵ as defined in the compounds of formulae (I), (II) or (III). More preferably R⁵⁵ is phenyl, O-phenyl or O-benzyl.

Furthermore, E is preferably substituted by one radical R⁵⁶ as defined in the compounds of formulae (I), (II) or (III) wherein at least one, preferably two and particularly all of Q¹, Q² and Q³ have the following definition:

-   -   Q¹ is CO,     -   Q² is a bond, and/or     -   Q³ is a saturated or partially unsaturated monocyclic ring         having a maximum of 8, preferably a maximum of 6 and         particularly 4 or 5 carbon atoms and 0 to 5, preferably 1 or 2         and particularly 1 nitrogen atom and is preferably connected to         Q² via a nitrogen atom.

In a further preferred embodiment Q³ is azetidine, piperazine, pyrrolidine, piperidine or morpholine.

Moreover, E is preferably substituted by one radical R⁵⁷ as defined in the compounds of formulae (I), (II) or (III). More preferably R⁵⁷ is CO—N(C₁-C₄-alkyl)₂ or CO—O-C₁-C₄-alkyl, and in particular CO—N(CH₃)₂.

Preferred combinations of W, X, Y, Z, R⁵³, R⁵⁵ and/or R⁵⁷ result in groups R⁵ having the following definition:

wherein

-   -   x is 1 or 2.

More preferred combinations of W, X, Y, Z, R⁵³ and/or R⁵⁷ result in groups R⁵ having the following definition:

Particularly preferred combinations of W, X, Y, Z, R⁵³ and/or R⁵⁷ result in groups R⁵ having the following definition:

Furthermore, particularly preferred are combinations of preferred embodiments of the above defined groups in the second preferred embodiment of R⁵.

In a further preferred embodiment a compound of the formula (I), (II) or (III) is disclosed, wherein E is pyrrolidine bonded to Z via the ring nitrogen atom, with R⁵³ at position C-4 and selected from the group consisting of fluorine, OH, C₁-C₄-alkyl, O-C₁-C₄-alkyl or CN, and with R⁵⁶ at position C-2 selected from the group consisting of hydrogen, C₁-C₆-alkyl, phenyl, C₁-C₄-alkylen-phenyl, COOH, CO—O-C₁-C₄-alkyl, CONH₂, CO—NH-C₁-C₄-alkyl, CO—N(C₁-C₄-alkyl)₂, CO-C₁-C₄-alkyl, CH₂—NH₂, CH₂—NH-C₁-C₄-alkyl and CH₂—N(C₁-C₄-alkyl)₂.

Third Preferred Embodiment of R⁵ in the Compounds of Formulae (I), (II) or (III)

According to this preferred embodiment, R⁵ is a radical (W)—(X)—(Y)—Z as defined in the compounds of formulae (I), (II) or (III) wherein at least one, preferably two, more preferably three and particularly all of W, X, Y and Z have the following definition:

-   -   W is O, CH₂, NR⁵⁴ or NR⁵⁴(C₁-C₄-alkylen), preferably O or NH;     -   X is CO;     -   Y is a bond; and/or     -   Z is E.

Preferably, E is a saturated or partially unsaturated monocyclic ring having a maximum of 8, preferably a maximum of 6 and particularly 4 or 5 carbon atoms, and 0 to 3, preferably 1 or 2 nitrogen atoms.

More preferably E is selected from the group consisting of

even more preferably from the group consisting of

and most preferably E is

-   -   wherein one bond ‘—*’ defines the bonding position to group Y         and the second bond ‘—*’ defines the bonding position to an         optional substituent R⁵⁶.

Further, according to one embodiment E is

Moreover, according to another embodiment E is

Preferably, E is substituted by R⁵⁶ as defined in compounds of formulae (I), (II) or (III), wherein at least one, preferably two and particularly all of Q¹, Q² and Q³ have the following definition:

-   -   Q¹ is a bond,     -   Q² is a bond,     -   Q³ is a unsaturated, saturated or partially unsaturated         monocyclic ring having a maximum of 8, preferably 6 and         particularly 4 or 5 carbon atoms, 0 to 5 and preferably 1 or 2         nitrogen atoms, 0 to 2 and preferably 0 or 1 oxygen atoms, and 0         to 2 and preferably 0 or 1 sulfur atom.

Preferably, Q³ is substituted by R⁶³ as defined in compounds of formulae (I), (II) or (III).

R⁶³ is preferably C₁-C₄-alkyl and particularly methyl.

More preferably, Q³ is selected from the group consisting of

and even more preferably from the group consisting of

Still more preferably Q³ is

According to one embodiment Q³ is

According to another embodiment Q³ is

Particularly preferred are combinations of W, X, Y, Z and R⁶³ resulting in the following groups R⁵:

Furthermore, particularly preferred are combinations of preferred embodiments of the above defined groups in the third preferred embodiment of R⁵.

Particularly preferred are compounds of formula (I) wherein at least two and most preferably all of A, R³, R⁴, R⁵, R⁶ and R⁷ are defined according to above described preferred embodiments of these groups.

Particularly preferred are further compounds of formula (II) wherein at least two and most preferably all of B, R³, R⁴, R⁵, R⁶ and R⁷ are defined according to above described preferred embodiments of these groups.

Particularly preferred are moreover compounds of formula (III) wherein at least two and most preferably all of A, R³, R⁴, R⁵, R⁶ and R⁷ are defined according to above described preferred embodiments of these groups.

The terms “alkyl”, “alkylene”, “alkenyl”, “alkenylene”, “alkynyl” and “alkynylene” as used herein always include unbranched or branched “alkyl”, “alkylene”, “alkenyl”, “alkenylene”, “alkynyl” or “alkynylene”.

C₁-C₄-alkyl as used herein is preferably methyl, ethyl, n-propyl, i-propyl, n-butyl, sec-butyl or t-butyl.

C₁-C₄-alkylene as used herein is preferably methylene, ethylene, or branched or unbranched propylene or butylene.

C₂-C₄-alkenyl as used herein is preferably ethenyl, or branched or unbranched propenyl or butenyl.

C₂-C₄-alkenylene as used herein is preferably ethenylene, or branched or unbranched propenylene or butenylene.

C₂-C₄-alkynyl as used herein is preferably ethynyl, or branched or unbranched propynyl or butynyl.

C₂-C₄-alkynylene as used herein is preferably ethynylene, or branched or unbranched propynylene or butynylene.

C₁-C₆-alkyl as used herein is preferably branched or unbranched hexyl or pentyl, more preferably C₁-C₄-alkyl, and in particular methyl, ethyl, n-propyl, i-propyl, n-butyl, sec-butyl or t-butyl.

C₁-C₆-alkylene as used herein is preferably branched or unbranched hexylene or pentylene, more preferably C₁-C₄-alkylene, and in particular methylene, ethylene, or branched or unbranched propylene or butylene.

C₂-C₆-alkenyl as used herein is preferably branched or unbranched hexenyl or pentenyl, more preferably C₂-C₄-alkenyl, and in particular ethenyl, or branched or unbranched propenyl or butenyl.

C₂-C₆-alkenylene as used herein is preferably branched or unbranched hexenylene or pentenylene, more preferably C₂-C₄-alkenylene, and in particular ethenylene, or branched or unbranched propenylene or butenylene.

C₂-C₆-alkynyl as used herein is preferably branched or unbranched hexynyl or pentynyl, more preferably C₂-C₄-alkynyl, and in particular ethynyl, or branched or unbranched propynyl or butynyl.

C₂-C₆-alkynylene as used herein is preferably branched or unbranched hexynylene or pentynylene, more preferably C₂-C₄-alkynylene, and in particular ethynylene, or branched or unbranched propynylene or butynylene.

As used herein, “benzothiazole” means 2-, 3-, 4-, 5-, 6- or 7-benzothiazole, “pyrimidine” means 2-, 4-, 5-, or 6-pyrimidine, “pyridine” means 2-, 3-, 4-, 5- or 6-pyridine, “pyridazine” means 3-, 4-, 5- or 6-pyridazine, “pyrazine” means 2-, 3-, 5- or 6-pyrazine, “isoquinoline” means 1-, 3-, 4-, 5-, 6-, 7-, or 8-isoquinoline, “quinoline” means 2-, 3-, 4-, 5-, 6-, 7-, or 8-quinoline, “thiazole” means 2-, 4- or 5-thiazole, “benzimidazole” means 2-, 4-, 5-, 6- or 7-benzimidazole, “imidazole” means 2-, 4- or 5-imidazole, “benzoxazole” means 2-, 4-, 5-, 6- or 7-benzoxazole, “benzothiophene” means 2-, 3-, 4-, 5-, 6-, or 7-benzothiophene, “thiophene” means 2-, 3-, 4- or 5-thiophene, “benzofuran” means 2-, 3-, 4-, 5-, 6- or 7-benzofuran and “furan” means 2-, 3-, 4- or 5-furan.

Further, as used herein, “pyrrole” means 2-, 3-, 4- or 5-pyrrole, “tetrahydroquinoline” means 1-, 2-, 3-, 4-, 5-, 6-, 7- or 8-tetrahydroquinoline, “tetrahydroisoquinoline” means 1-, 2-, 3-, 4-, 5-, 6-, 7- or 8-tetrahydroisoquinoline, “dihydrobenzofuran” means 2-, 3-, 4-, 5-, 6- or 7-dihydrobenzofuran, “indole” means 1-, 2-, 3-, 4-, 5-, 6- or 7-indole, “dihydroisoindole” means 1-, 2-, 3-, 4-, 5-, 6- or 7-dihydroisoindole.

Further, as used herein, “pyrazole” means 1-, 3-, 4- or 5-pyrazole, “isoxazole” means 3-, 4- or 5-isoxazole, “imidazothiazole” means 2-, 4-, 5- or 6-imidazothiazole, “benzoxazine” means 2-, 3-, 4-, 5-, 6-, 7- or 8-benzoxazine, “quinoxaline” means 2-, 3-, 5-, 6-, 7- or 8-quinoxaline.

Further, as used herein, “azetidine” means 1-, 2-, 3- or 4-azetidine, “piperazine” means 1-, 2-, 3-, 4-, 5- or 6-piperazine, “pyrrolidine” means 1-, 2-, 3-, 4- or 5-pyrrolidine, “piperidine” means 1-, 2-, 3-, 4-, 5- or 6-piperidine and “morpholine” means 2-, 3-, 4-, 5- or 6-morpholine.

At each occurrence in the present application, the formulations “NR⁵⁴” and CO—NR⁵⁸ shall, particularly in a preferred embodiment, include NHR⁵⁴ and CO—NHR⁵⁸, respectively.

At each occurrence in the present application, the formulation “N(definition of residue)_(number)” (e.g. “N(C₁-C₄-alkyl)₂”) shall, particularly in a preferred embodiment, be understood that each of the residues according to the given “number” may have independently of each other either the same or different meanings. For example, “N(C₁-C₄-alkyl)₂” shall represent “N(C₁-C₄-alkyl)(C₁-C₄-alkyl)” wherein both residues “(C₁-C₄-alkyl)” are each bonded to the nitrogen atom and may have either the same or different meanings.

At each occurrence in the present application, the formulation “E is an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having a maximum of 14 carbon atoms and 0 to 5 nitrogen atoms, 0 to 2 oxygen atoms and/or 0 to 2 sulfur atoms, said ring may comprise up to two oxo groups, and may be substituted by radicals R⁵⁵, R⁵⁶, R⁵⁷, and/or up to three radicals R⁵³” shall, particularly as a preferred embodiment, have the meaning of “E is an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having as ring members any of from 2 to (a maximum of) 14 carbon atoms and any of 0, 1, 2, 3, 4 and 5 nitrogen atoms, any of 0, 1 and 2 oxygen atoms and any of 0, 1 and 2 sulfur atoms, said ring comprising any of 0, 1 and 2 oxo groups and be optionally substituted at the ring carbon atom and/or ring nitrogen atom by from one to three radicals selected from the group consisting of R⁵⁵, R⁵⁶ and R⁵⁷, and with 1, 2 or 3 radicals R⁵³ which independently of each other may have either identical or different meanings, wherein E can be bonded to Y via a carbon ring atom or a nitrogen ring atom” and, more preferably, the meaning of “E is an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having as ring members 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or a maximum of 14 carbon atoms and 0, 1, 2, 3, 4 or 5 nitrogen atoms, 0, 1 or 2 oxygen atoms and/or 0, 1 or 2 sulfur atoms, said ring comprise 0, 1 or 2 oxo groups and be optionally substituted at the ring carbon atom and/or ring nitrogen atom by radicals R⁵⁵, R⁵⁶ and/or R⁵⁷, and/or with 1, 2 or 3 radicals R⁵³ which independently of each other may have either identical or different meanings, wherein E can be bonded to Y via a carbon ring atom or a nitrogen ring atom”.

At each occurrence in the present application, the formulation “Q³ is a hydrogen or an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having as ring members a maximum of 14 carbon atoms and 0 to 5 nitrogen atoms, 0 to 2 oxygen atoms and/or 0 to 2 sulfur atoms, which may comprise up to two oxo groups and may be substituted by the radicals R⁶³, R⁶⁴ and/or R⁶⁵” shall have, particularly as a preferred embodiment, the meaning of “Q³ is a hydrogen or an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having as ring members any from 2 to (a maximum of) 14 carbon atoms and any of 0, 1, 2, 3, 4 and 5 nitrogen atoms, and any of 0, 1 and 2 oxygen atoms and any of 0, 1 and 2 sulfur atoms, said ring may comprise any of 0, 1 and 2 oxo groups and may be substituted at the carbon ring atom and/or the nitrogen ring atom by the radicals R⁶³, R⁶⁴ and/or R⁶⁵ which independently of each other may have either identical or different meanings, wherein Q³ can be bonded to Q² via a carbon ring atom or a nitrogen ring atom” and, more preferably, the meaning of “Q³ is a hydrogen or an unsaturated, saturated or partially unsaturated mono-, bi- or tricyclic ring having as ring members any of from 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14 carbon atoms and any of 0, 1, 2, 3, 4 and 5 nitrogen atoms, and any of 0, 1 and 2 oxygen atoms and any of 0, 1 and 2 sulfur atoms, said ring may comprise any of 0, 1 and 2 oxo groups and may be substituted at the carbon ring atom and/or nitrogen ring atom by the radicals R⁶³, R⁶⁴ and/or R⁶⁵ which independently of each other may have either identical or different meanings, wherein Q³ can be bonded to Q² via a carbon ring atom or a nitrogen ring atom”.

At each occurrence in the present application, the formulation “where the heterocycles are 5- or 6-membered rings and comprise up to 4 heteroatoms selected from the group consisting of N, O and S, and up to 2 oxo groups, where not more than one of the heteroatoms is an oxygen atom” shall have, particularly as a preferred embodiment, the meaning of “where the heterocycles as forming part of the heteromonocyclic or heterobicyclic ring are 5- or 6-membered rings and per heteromonocyclic or heterobicyclic ring may comprise any of 1, 2, 3 and 4 heteroatoms which independently of each other are selected from the group consisting of N, O and S, said heterocycles may further comprise any of 0, 1 and 2 oxo groups, whereby not more than one of the heteroatoms is an oxygen atom”.

At each occurrence in the present application, the formulation “Where the heterocycles are 5- or 6-membered rings and comprise 2 to 4 heteroatoms selected from the group consisting of N, O and S, and up to 2 oxo groups” shall have, particularly as a preferred embodiment, the meaning of “where the heterocycles as forming part of the heteromonocyclic or heterobicyclic ring are 5- or 6-membered rings and per heteromonocyclic or heterobicyclic ring may comprise any of 2, 3 and 4 heteroatoms which independently of each other are selected from the group consisting of N, O and S, said heterocycles may further comprise any of 0, 1 and 2 oxo groups”.

At each occurrence in the present application, the formulation “where the heterocycles are 5- or 6-membered rings and comprise up to 4 heteroatoms selected from the group consisting of N, O and S, and up to 2 oxo groups” shall have, particularly as a preferred embodiment, the meaning of “where the heterocycles as forming part of the heteromonocyclic or heterobicyclic ring are 5- or 6-membered rings and per heteromonocyclic or heterobicyclic ring may comprise any of 1, 2, 3 and 4 heteroatoms which independently of each other are selected from the group consisting of N, O and S, said heterocycles may further comprise any of 0, 1 and 2 oxo groups”.

At each occurrence in the present application, in a preferred embodiment the residue R³ is placed at position C-5 of the 1,3-dihydroindol-2-one and selected from the group consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂ and R⁴ is hydrogen.

The formulation “partially aromatic” as used herein means an aromatic system comprising two or more double bonds wherein at least one of said double bonds has been hydrogenated by addition of hydrogen, whereby the remaining one or more double bounds may be either standing alone (in case of one double bound only), conjugated, partially conjugated or no longer conjugated with each other.

The formulation the “[said] ring may comprise up to two oxo groups” as used herein means that said ring has up to two carbon atoms which are each connected to an oxygen atom via a double bond.

Divalent radicals are to be read from the left to the right with respect to their bonds to other substructures of the molecule. Thus, for example “CO—NR⁵⁸” in the definition of X in R⁵ of the compound of formulae (I) to (IIII) is connected to W and Y as follows: (W)—CO—N(R⁵⁸)—(Y)—Z.

By prodrugs are meant those compounds which are metabolized in vivo to the compounds of the invention. Typical examples of prodrugs are described in C. G. Wermuth (ed.): The Practice of Medicinal Chemistry, Academic Press, San Diego, 1996, p. 671-715. These include, for example, phosphates, carbamates or amino acids, esters and others.

The invention further relates to the physiologically tolerated salts of the compounds of the invention which can be obtained by reacting the compounds of the invention with a suitable acid or base. Suitable acids and bases are listed for example in Fortschritte der Arzneimittelforschung, 1966, Birkhäuser Verlag. vol. 10, pages 224-285. These include for example hydrochloric acid, citric acid, tartaric acid, lactic acid, phosphoric acid, methanesulfonic acid, acetic acid, formic acid, maleic acid, fumaric acid etc., and sodium hydroxide, lithium hydroxide, potassium hydroxide and 2-amino-2-(hydroxymethyl)-1,3-propanediol (Tris).

The invention further relates to the compound of any of general formulae (I) to (III) as therapeutic or prophylactic agent.

Furthermore, the invention relates to a medicament comprising the compound of any of general formulae (I) to (III).

The compound of any of general formulae (I) to (III) can be used for producing a medicament for the control and/or prophylaxis of various vasopressin-dependent or oxytocin-dependent diseases.

The invention further relates to the use of the compound of any of general formulae (I) to (III) for the control and/or prophylaxis of various vasopressin-dependent or oxytocin-dependent diseases.

A further aspect of the invention is a method for the therapeutic and/or prophylactic treatment of a mammal requiring a treatment by administering the compound of any of formulae (I) to (III) for the treatment of diseases.

Furthermore, the compound of any of formulae (I) to (III) can be used for the treatment of:

-   depressions and/or bipolar disorders such as, for example, dysthymic     disorders, subsyndromal depression, seasonal affected disorders,     premenstrual dysphoric disorders and/or psychotic disorders; -   anxiety and/or stress-related disorders such as, for example,     general anxiety disorders, panic disorders, obsessive-compulsive     disorders, post-traumatic disorders, acute stress disorders and/or     social phobia; -   memory disorders and/or Alzheimer's disease; -   psychoses and/or psychotic disorders; and/or -   Cushing's syndrome.

The compounds of the invention are effective after administration in various ways, especially orally.

The compounds according to the present invention can be useful for the treatment or prevention of various vasopressin-dependent or ocytocin-dependent complaints, such as mental disorders. Examples of such mental disorders according to the American Psychiatric Association DSM-IV, Diagnostic and Statistical Manual of Mental Disorders, 4th ed., 1994 are attention-deficit and disruptive behavior disorders; delirium, dementia, and amnestic and other cognitive disorders; substance-related disorders, such as alcohol use disorders and alcohol-induced disorders; schizophrenia and other psychotic disorders, such as schizophrenia, schizophreniform disorder, schizoaffective disorder and delusional disorder; mood disorders, such as depressive disorders (major depressive disorder, dysthymic disorder, seasonal affective disorder, premenstrual dysphoric disorder, depressive disorder not otherwise specified), bipolar disorder (bipolar I disorder, bipolar II disorder, cyclothymic disorder, bipolar disorder not otherwise specified, substance-induced mood disorder, mood disorder not otherwise specified); stress-related disorders, such as acute stress disorder; anxiety disorders, such as panic disorder without agoraphobia, panic disorder with agoraphobia, agoraphobia without history of panic disorder, specific phobia, social phobia, obsessive-compulsive disorder, posttraumatic stress disorder, acute stress disorder, generalized anxiety disorder, substance-induced anxiety disorder; somatoform disorders, such as somatization disorder, undifferentiated somatoform disorder, conversion disorder, pain disorder; eating disorders; sleep disorders, such as primary sleep disorders (dyssomnias, parasomnias), sleep disorders related to another mental disorder. Furthermore, compounds according to the present invention can be useful for the treatment of Cushing syndrome.

The present invention also relates to pharmaceutical compositions which comprise an effective dose of a compound of the invention or of a pharmaceutically acceptable salt thereof and suitable pharmaceutical carriers.

These pharmaceutical carriers are chosen according to the pharmaceutical form and the desired mode of administration.

With the pharmaceutical compositions of the present invention for oral, sublingual, subcutaneous, intramuscular, intravenous, topical, intratracheal, intranasal, transdermal or rectal administration it is possible to administer the compounds of the formula (I), (II) or (III) or, where suitable, the salts thereof to animals or humans in unitary administration forms, mixed with conventional pharmaceutical carriers, for the prophylaxis or treatment of the above disorders or diseases.

The suitable unitary administration forms include forms for oral administration, such as tablets, gelatin capsules, powders, granules and solutions or suspensions for oral intake, forms for sublingual, buccal, intratracheal or intranasal administration, aerosols, implants, forms for subcutaneous, intramuscular or intravenous administration and forms for rectal administration.

For topical administration, the compounds of the invention can be used in creams, ointments or lotions.

In order to achieve the desired prophylactic or therapeutic effect, the dose of the basic active ingredient may vary between 0.01 and 50 mg per kg of bodyweight and per day.

Each unit dose may comprise from 0.05 to 5 000 mg, preferably 1 to 1 000 mg, of the active ingredient in combination with a pharmaceutical carrier. This unit dose may be administered 1 to 5 times a day so that a daily dose of from 0.5 to 25 000 mg, preferably 1 to 5 000 mg, is administered.

If a solid composition is prepared in the form of tablets, the main ingredient is mixed with a pharmaceutical carrier such as gelatin, starch, lactose, magnesium stearate, talc, silica or the like.

The tablets may be coated with sucrose, a cellulose derivative or another suitable substance or treated otherwise in order to display persistent or delayed activity and in order to release a predetermined amount of the basic active ingredient continuously.

A preparation in the form of gelatin capsules is obtained by mixing the active ingredient with an extender and taking up the resulting mixture in soft or hard gelatin capsules.

A preparation in the form of a syrup or elixir or for administration in the form of drops may comprise active ingredients together with a sweetener, which is preferably calorie-free, methylparaben or propylparaben as antiseptics, a flavoring and a suitable color.

The water-dispersible powders or granules may comprise the active ingredients mixed with dispersants or wetting agents, or suspending agents, such as polyvinylpyrrolidones, and sweeteners or masking flavors.

Rectal administration is achieved by using suppositories which are prepared with binders which melt at the rectal temperature, for example cocoa butter or polyethylene glycols. Parenteral administration is effected by using aqueous suspensions, isotonic salt solutions or sterile and injectable solutions which comprise pharmacologically acceptable dispersants and/or wetting agents, for example propylene glycol or polyethylene glycol.

The basic active ingredient may also be formulated as microcapsules or liposomes, if suitable with one or more carriers or additives.

In addition to the compounds of the general formula (I) or their pharmaceutically acceptable salts, the compositions of the invention may comprise other basic active ingredients which may be beneficial for the treatment of the abovementioned disorders or diseases.

The present invention thus further relates to pharmaceutical compositions in which a plurality of basic active ingredients are present together, where one of these is the compound of the invention.

The compounds of the invention were tested for their activity in the following vasopressin V1b receptor binding assay.

Vasopressin V1b Receptor Binding Assay

The binding of the compounds of this invention to the vasopressin V1b receptor was determined with the following assay:

Dissolution of Compounds

Compounds were dissolved in a concentration of 10⁻² M or 10⁻³ M in DMSO. Further dilutions were performed with water

Binding Assays

The procedure for the binding assay was based on the method of Tahara et al. (Tahara A et al., Brit. J. Pharmacol. 125, 1463-1470 (1998)). Assays (0.250 ml) consisted of membranes (58 μg protein) from CHO-K1 cells permanently expressing human V1b receptors (preparation V1b-3H2, containing protease inhibitors, Roche complete Mini #1836170), 1.5 nM ³H-AVP (8-Arg-vasopressin, NET 800) in incubation buffer (total binding) and different concentrations of test compound (displacement). Non-specific binding was defined with 10⁻⁶ M AVP. Assays were performed in triplicate.

Incubation buffer: 50 mM Tris, 10 mM MgCl₂, 0.1% BSA adjusted to pH 7.4 with HCl.

After incubation, 60 min at room temperature, bound and free radioligand was separated by filtration under vacuum through Whatman GF/B glass fibre mats using a Skatron cell harvester 7000.

Liquid scintillation counting was performed in beta-counters, Tricarb model 2000 or 2200CA (Packard). Dpm were calculated by a programme with standardisation using a standard quench series.

Evaluation

Evaluation of binding parameters was performed by non-linear regression analysis with SAS. The strategy of this program is similar to the program LIGAND described by Munson and Rodbard (Munson P J and Rodbard D, Analytical Biochem 107, 220-239 (1980)).

The compounds of the invention bind to the vasopressin V1b receptor. In the following Table 1 the binding affinity of selected examples for the vasopressin V1b receptor is shown.

TABLE 1 Binding affinity of selected examples for the vasopressin V1b receptor Binding affinity for the Example # vasopressin V1b receptor 2 +++ 3 +++ 5 +++ 6 ++ 9 +++ 10 +++ 13 +++ 28 +++ 29 +++ 31 +++ 32 ++ 33 ++ 47 +++ 48 +++ 51 +++ 52 +++ 53 +++ 56 +++ 59 + 63 + 65 ++ 75 +++ 76 +++ 82 +++ 83 +++ 103 +++ 104 +++ 105 +++ 107 +++ 113 +++ 115 +++ 122 ++ 123 ++ 125 +++ 126 +++ 127 +++ 130 +++ 134 +++ 136 +++ 143 +++ 145 +++ 154 +++ 158 +++ 165 ++ 166 ++ 168 +++ 169 ++ 170 ++ 171 +++ 172 ++ 220 +++ 221 +++ 222 +++ 224 +++ 225 ++ 226 ++ 227 +++ 230 +++ 232 +++ 234 +++ 236 +++ 237 +++ 238 +++ 239 +++ 240 +++ 241 ++ 242 +++ 243 +++ 245 +++ 246 +++ 247 +++ 248 +++ 252 +++ 253 +++ 255 ++ 256 +++ 270 +++ 277 ++ 280 +++ 281 ++ 282 +++ 286 ++ 288 +++ 289 +++ + indicates binding affinity > 500 nM ++ indicates binding affinity between 50 and 500 nM +++ indicates binding affinity < 50 nM Functional Assay for the Human V_(1b) Receptor

Functional activity was determined by testing the effect of the compounds on calcium release in CHO-K1 cells stably transfected with human V_(1b) receptor. Cells were seeded into 96-well plates at 50,000 cells/well and grown overnight in tissue culture medium (DMEM/Nut mix F12 Medium with Glutamax I (Invitrogen), containing 10% FCS, 100 units/ml Penicillin, 100 μg/ml Streptomycine, 800 μg/ml Geneticin) at 37° C. and 5% CO₂. Cells were loaded with a fluorescent calcium-sensitive dye in the presence of 1% probenicid according to the manufacturers protocol (Ca⁺⁺-Plus-Assay Kit, Molecular Devices). Serial compound dilutions (final concentrations 10⁻¹⁰ to 10⁻⁵ M) were added to the cells either alone or in the presence of Arg-vasopressin (10⁻⁸M) and the maximum calcium response was determined using a FLIPR-96 instrument (Molecular Devices). Concentration-response curves were fitted using a three-parameter logistic equation (GraphPad Prism). Kb values were calculated from IC50 values according to Cheng & Prusoff (Kb=IC50/(1+L/EC50)).

Antidepressant Effects of Compounds of this Invention in the Rat Forced Swim Model

The potential antidepressant effects of some examples of this invention were examined in the rat forced swim test. When rats are forced to swim in a cylinder from which no escape is possible they readily adopt a characteristic immobile posture and make no further attempts to escape except for small movements needed to keep floating. The immobility is considered to reflect a ‘depressive mood’ (Porsolt R D, LePichon M, Jalfre M (1977). Depression: a new animal model sensitive to antidepressant treatment. Nature 266, 730-732.), in which animals cease to struggle to escape the aversive situation. The immobility induced by the procedure is influenced by a wide variety of antidepressants (Porsolt R D, Lenegre A, McArthur R A (1991). Pharmacological models of depression. In: Animal models in Psychopharmacology. B. Olivier, J. Mos, J. L. Slangen (eds) Birkhauser Verlag, Basel, pp. 137-159.) and has a good predictive validity in that it detects antidepressants with different mechanisms of action. Administration of antidepressants such as fluoxetine increases the time an animal struggles (decreases the immobility time) when forced to swim in a confined space. Lack of struggling is thought to represent a state of despair.

Procedure: Male Sprague Dawley rats (Janvier) weighing 160-200 gram (n=6) were placed individually into a glass water tank (40 cm×21.5 cm) filled with tap water (25° C.) up to 18 cm. This pre-test lasted for 15 min. Twenty-four hours later, animals were re-tested for 5 min in the same water tank while the total immobility time, swimming time and climbing time were recorded. Rats were considered immobile when they made no further attempts to escape, except for movements necessary to keep their heads above water (Porsolt R D, Anton G, Blavet N & Jalfre M. (1978). Behavioural despair in rats: a new model sensitive to antidepressant treatments. European Journal of Pharmacology 47, 379-391). The absence of hind limb movements was recorded as immobility using a stopwatch by a single observer. The water in the bath was changed after each trial. Drugs were administered via intraperitoneal route as suspensions in hydroxypropylmethylcellulose (HPMC) three times before re-testing (for example 24, 4 and 0.5 hours before re-testing, depending on the test compound).

Some of the compounds of the invention, when tested in the rat forced swim model, yielded results strongly suggestive of antidepressant activity. The compounds of Examples 5 and 29 decreased the immobility time in a dose-dependent manner with an ED50 of <30 mg/kg. In comparison, SSR149415 (Griebel et al., PNAS 99, 6370 (2002)), an antidepressant-like compound that is structurally related to some compounds of this invention, showed an ED50 value of >30 mg/kg in our rat forced swim model.

These data show that subtle changes, such as replacing the 2-methoxy-phenyl group in SSR149415 with a 2-methoxy-pyridin-3-yl group or replacing the 2,4-dimethoxy-benzenesulfonyl moiety with a thiophene-2-sulfonyl moiety, can lead to compounds having significantly enhanced activity in the rat forced swim model. Lower ED50 values, in turn, are likely to result in lower doses being required to obtain antidepressant effects, thus offering the possibility of an improved therapeutic index.

The synthesis of the compounds of the invention is described below.

The 1,3-dihydroindol-2-ones of the invention can be prepared in various ways, as outlined in synthesis schemes 1-5.

The 3-hydroxy-1,3-dihydroindol-2-ones VI can be obtained by addition of metalated heterocycles IV to the 3-keto group of satins V. Examples of metalated heterocycles which can be employed are the corresponding magnesium and lithium compounds. The isatins V were either purchased or prepared by methods described in the literature (Advances in Heterocyclic Chemistry, A. R. Katritzky and A. J. Boulton, Academic Press, New York, 1975, 18, 2-58; J. Brazil. Chem. Soc. 12, 273-324 (2001)). The metalated heterocycles IV were prepared in various ways (see review article by G. Queguiner et al. in Advances in Heterocyclic Chemistry, Vol. 52, ed. A. R. Katritzky, Academic Press, 1991, 187-304: J. Heterocyclic Chem. 37, 615 (2000); Heterocyles 37, 2149, (1994)): (i) reaction of heteroaryl halides with magnesium affords in certain cases (for example 2-bromo-3-methylthiophene) the corresponding Grignard compounds (M=Mg); (ii) reaction of heteroaryl bromides and iodides with alkyllithium reagents such as, for example, n-butyllithium, tert-butyllithium or mesityllithium at low temperatures affords in certain cases (for example 5-bromo-2,4-dimethoxypyrimidine) the lithiated heterocycles by halogen-lithium exchange; (iii) reaction of substituted heterocycles with the aforementioned alkyllithium reagents and lithium bases such as, for example, lithium diisopropylamide or lithium tetramethylpiperidylamide likewise affords in certain cases (for example 2-methoxypyrazine) the lithiated heterocycles, especially when the hetero-aromatic system is substituted by ortho-directing groups such as, for example, a methoxy group.

The 3-hydroxy-1,3-dihydroindol-2-ones VI were converted in the next step into compounds VII which bear a leaving group LG in position 3. Examples for LG are halides, mesylate and tosylate. Thus, for example, in the case where LG is chlorine the intermediate VII can be prepared by treating the tertiary alcohol VI with thionyl chloride in the presence of a base such as, for example, pyridine. Alternatively, alcohols VI can be activated by conversion into the mesylate using methanesulfonyl chloride in the presence of a base such as, for example, triethylamine. The leaving group LG in the compounds VII can then be replaced by various nucleophiles R5-H, resulting in the compounds VIII which have the radical R5 in position 3. For example, replacement reactions with primary and secondary amines R5-H in the presence of a base such as, for example, N,N-diisopropylethylamine in a solvent such as, for example dichloromethane afford the analogous 3-amino-1,3-dihydroindol-2-ones VIII. The reaction is not confined to nitrogen nucleophiles; it is also possible for oxygen or sulfur nucleophiles R5-H, where appropriate after deprotonation with a suitable base such as, for example, sodium hydride. Final sulfonylation by treating the compounds VIII with the sulfonyl chlorides IX after deprotonation with a strong base such as, for example, potassium tert-butoxide or sodium hydride in a solvent such as, for example, DMF affords the compounds X of the invention.

The 3-urethane derivatives XIII were prepared by initially reacting the 3-hydroxy-1,3-dihydroindol-2-ones VI with heterocyclic sulfonyl chlorides XI under the conditions already described above. Heterocyclic sulfonyl chlorides were either purchased or prepared by standard methods (see, for example, J. Med. Chem. 40, 1149 (1997); J. March, Advanced Organic Chemistry, 1992, 4th ed., Wiley, New York, p 724). The compounds XIII of the invention were prepared in various ways starting from the sulfonylated compounds XII: (i) reaction with isocyanates L=C═O (L contains nitrogen); (ii) reaction with carbamoyl chlorides L-CO-Cl (L contains nitrogen) in the presence of a base such as, for example, triethylamine; (iii) activation with phenyl chloroformate in the presence of a base such as, for example, pyridine and subsequent reaction of the carbonate intermediate with amines L-H, where appropriate at elevated temperature. Heteroaryl-substituted piperidines, that can be employed as amines L-H, can be prepared as described in Tetrahedron Lett. 34, 5287 (1993) and Bioorg. Med. Chem. Lett. 11, 2213 (2001) for 4-(4′-piperidinyl)-pyridine.

Compounds XXII of the invention bearing a functionalized nitrogen atom in position 3 (e.g. amides, sulfonamides, carbamates and ureas) were prepared as described in synthesis scheme 3. The 3-amino-1,3-dihydroindol-2-ones XX were prepared for example by reacting compounds VII (LG is a leaving group such as, for example, chloride or mesylate) with primary amines R⁵⁴—NH₂ in the presence of a base such as, for example, N,N-diisopropylethylamine in suitable solvents such as, for example, dichloromethane. Treatment of compounds XX with sulfonyl chlorides XI after deprotonation with a strong base such as, for example, potassium tert-butoxide or sodium hydride in a solvent such as, for example, DMF afforded the 3-amino-1,3-dihydroindol-2-ones XXI sulfonylated in position 1. The amino derivatives XXII of the invention were prepared from the amines XXI by reaction with customary reagents for derivatizing amino groups, such as, for example, carboxylic acids, carbonyl chlorides, carboxylic anhydrides, sulfonyl chlorides, chloroformates, isocyanates, carbamoyl chlorides by the relevant methods (J. March, Advanced Organic Chemistry, 1992, 4th ed., Wiley, New York, pp. 417-421; 499; 903).

N-heteroaryl-substituted piperidine carboxylic acids, that can be employed as coupling partner for the amines XXI, can be prepared for example as described in J. Med. Chem. 43, 2087 (2000) for 4-carboxy-N-(4-pyridyl)piperidine.

In addition, the 3-amino group in the compounds XXI can be substituted by treatment with alkylating agents such as, for example, alkyl bromides, iodides or mesylates, and by reaction with aldehydes or ketones in the presence of reducing agents such as, for example, sodium cyanoborohydride in the sense of a reductive amination (J. March, Advanced Organic Chemistry, 1992, 4th ed., Wiley, New York, p. 411; 898).

Compounds XXVII of the invention in which X—Y—Z radicals are linked via an alkylene bridge W to position 3 of the 1,3-dihydroindol-2-one framework were prepared for example by alkylation of the deoxygenated compounds XXIII and, where appropriate, derivatized further. An example for the preparation of compounds of the XXVII type in which W is a methylene group and X is a carbonyl group is described in synthesis scheme 4: Deoxygenation of the 3-hydroxy-1,3-dihydroindol-2-ones VI took place with triethylsilane in trifluoroacetic acid. The esters XXIV were prepared by alkylation of the 1,3-dihydroindol-2-ones XXIII with ethyl bromoacetate in the presence of bases such as, for example, potassium carbonate and, where appropriate, potassium iodide. After hydrolysis of the ester function, for example by treatment with lithium hydroxide in a water/THF/methanol mixture, the acids XXV were coupled with amines H—Y—Z employing relevant methods (J. March, Advanced Organic Chemistry, 1992, 4th ed., Wiley, New York, pp. 417-421). Final sulfonylation of the compounds XXVI with sulfonyl chlorides XI afforded the compounds XXVII of the invention.

Compounds of the invention in which X—Y—Z radicals are linked via an oxygen atom (W=O) to position 3 of the 1,3-dihydroindol-2-one framework were prepared for example by alkylation of the 1-sulfonyl-3-hydroxy-1,3-dihydroindol-2-ones XII with alkylating agents such as, for example, aralkyl bromides, iodides or mesylates after deprotonation of the tertiary hydroxyl group with bases such as, for example, sodium hydride.

Enantiopure compounds can be obtained for example by carrying out a conventional racemic resolution using suitable optically active acids or bases with compounds of the invention or intermediates which comprise basic or acidic functional groups such as, for example, an amino or carboxyl group.

EXAMPLES (2S,4R)-4-Hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride

-   A) BOP (172 g, 0.389 mol) was added in portions to a solution of     (2S,4R)-1-(tert-butoxycarbonyl)-4-hydroxy-pyrrolidine-2-carboxylic     acid (90 g, 0.398 mol) in dichloromethane (450 ml) and DIPEA (68 ml,     0.523 mol) at 0° C. and stirred at 0° C. for 1 hour. Then a 2 M     solution of dimethylamine in THF (800 ml, 1.6 mol) was added     dropwise at 0° C., and the mixture was stirred at room temperature     overnight. The reaction mixture was stirred into ice-water, and the     mixture was extracted several times with dichloromethane. The     collected organic phase was washed with saturated brine, dried over     magnesium sulfate and concentrated under reduced pressure. -   B) The intermediate from step A was mixed with 500 ml of 5-6 M HCl     in isopropanol and stirred at room temperature for 4 hours. After     cooling to 0° C., the precipitate was filtered off, washed with     isopropanol and diethyl ether and dried. 37 g of the desired product     were obtained.

Example 1 and Example 2 (2S,4R)-1-[3-Benzothiazol-2-yl-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

A) 3-Benzothiazol-2-yl-5-chloro-3-hydroxy-1,3-dihydroindol-2-one

A 1.6 M solution of n-butyllithium in hexane (35 ml, 56 mmol) was added dropwise to a solution of benzothiazole (6.2 ml, 56 mmol) in THF (100 ml) at −78° C. After stirring at −78° C. for 1.5 h, the solution of the lithiated benzothiazole was transferred via a needle into an ice-cold suspension of 5-chloroisatin (3.63 g, 20 mmol) in THF (70 ml). The reaction mixture was stirred at 0° C. for 1 h and then saturated ammonium chloride solution was added. The mixture was extracted three times with ethyl acetate and the combined organic layers were washed with saturated brine. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure, during which the intermediate starts to crystallize. Filtration and drying yielded 4.47 g of the intermediate as yellow crystalline solid.

B) 3-Benzothiazol-2-yl-3,5-dichloro-1,3-dihydroindol-2-one

Pyridine (0.57 ml) and thionyl chloride (0.42 ml) were successively added to an ice-cooled solution of the intermediate from step A (1.27 g, 4.0 mmol) in dichloromethane (40 ml). The reaction mixture was stirred at 0° C. for 1 h and then saturated ammonium chloride solution was added. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude intermediate was rapidly employed without further purification in the next step.

C) (2S,4R)-1-(3-Benzothiazol-2-yl-5-chloro-2-oxo-2,3-dihydro-1H-indol-3-yl)-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

(2S,4R)-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride (0.78 g, 4.0 mmol) was added to a solution of the intermediate from step B in a mixture of dichloromethane (9 ml), THF (2 ml) and DIPEA (2 ml). The reaction mixture was stirred at room temperature for 48 h. After addition of water, the mixture was extracted four times with ethyl acetate. The combined organic layer was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The less polar diastereomer, as judged by thin-layer-chromatography using 5% MeOH in dichloromethane, precipitated on concentration and was filtered off. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) resulted in 0.28 g of the less polar diastereomer. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) of the mother liquor resulted in 0.36 g of the more polar diastereomer.

Example 1 (2S,4R)-1-[3-Benzothiazol-2-yl-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, dextrorotatory diastereomer

Sodium hydride (12 mg of 60% dispersion in mineral oil, 0.3 mmol) was added to an ice-cold solution of the less polar diastereomer intermediate from step C (115 mg, 0.25 mmol) in DMF (1.5 ml). The reaction mixture was stirred at 0° C. for 1 h and then 2,4-dimethoxy-benzene-sulfonyl chloride (71 mg, 0.3 mmol) was added. After the reaction mixture had been stirred at room temperature for one hour, water was added and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine and dried over magnesium sulfate. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) resulted in 93 mg of Example 1 as a white solid.

¹H NMR (400 MHz, DMSO-d₆) δ 8.15 (1H), 7.95 (1H), 7.75 (2H), 7.50 (3H), 7.20 (1H), 6.80 (1H), 6.75 (1H), 4.80 (1H), 4.25 (1H), 3.90 (3H), 3.85 (1H), 3.50 (3H), 3.25 (1H), 2.60 (3H), 1.85 (1H), 1.75 (1H); MS (API-ES, pos) m/z=657 [M+H]

Example 2 (2S,4R)-1-[3-Benzothiazol-2-yl-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

The diastereomer product was prepared by the method described in the previous paragraph starting from the more polar diastereomer intermediate from step C. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) resulted in Example 2 as a white solid.

¹H NMR (400 MHz, DMSO-d₆) δ 8.10 (1H), 7.95 (1H), 7.75 (1H), 7.65 (1H), 7.45 (4H), 6.80 (1H), 6.75 (1H), 4.85 (1H), 4.70 (1H), 4.30 (1H), 3.90 (3H), 3.60 (1H), 3.40 (3H), 2.83 (1H), 2.55 (3H), 2.45 (3H), 2.10 (1H), 1.80 (1H); MS (API-ES, pos) m/z=657 [M+H]

Example 3 and Example 4 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

A) 5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-3-hydroxy-1,3-dihydroindol-2-one

A 1.6 M solution of n-butyllithium in hexane (10 ml, 16 mmol) was added dropwise to a solution of 5-bromo-2,4-dimethoxypyrimidine (3.29 g, 15 mmol) in THF (50 ml) at −78° C. After stirring at −78° C. for 0.5 h, a suspension of 5-chloroisatin (1.27 g, 7.0 mmol) in THF (50 ml) was added dropwise. The reaction mixture was allowed to warm to room temperature and then saturated ammonium chloride solution was added. The mixture was extracted three times with ethyl acetate, and the combined organic layers were washed with saturated brine. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by chromatography (silica gel, 50% ethyl acetate in dichloromethane) resulted in 0.97 g of the intermediate.

B) 3,5-Dichloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-1,3-dihydroindol-2-one

Pyridine (0.28 ml) and thionyl chloride (0.18 ml) were added successively to an ice-cold solution of the intermediate from step A (0.64 g, 2.0 mmol) in dichloromethane (20 ml). The reaction mixture was stirred at 0° C. for 1 h and then saturated ammonium chloride solution was added. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude intermediate was rapidly employed without further purification in the next step.

C) (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

(2S,4R)-4-Hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride (0.39 g, 2.0 mmol) was added to a solution of the intermediate from step B in a mixture of dichloromethane (4 ml), THF (1 ml) and DIPEA (1 ml). The reaction mixture was stirred at room temperature for 18 h. After addition of water, the mixture was extracted four times with ethyl acetate. The combined organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by chromatography (silica gel, 7% MeOH in dichloromethane) resulted in 0.45 g of the mixture of diastereomers (ratio about 2:1).

D) (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

Sodium hydride (12 mg of 60% dispersion in mineral oil, 0.3 mmol) was added to an ice-cold solution of the mixture of diastereomers from step C (139 mg, 0.30 mmol) in DMF (1.5 ml). The reaction mixture was stirred at 0° C. for 0.5 h and then 2,4-dimethoxy-benzenesulfonyl chloride (71 mg, 0.3 mmol) was added. After the reaction mixture had been stirred at room temperature for one hour, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and saturated brine and dried over magnesium sulfate. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) resulted in 63 mg of the less polar diastereomer (levorotatory isomer) and 25 mg of the more polar diastereomer (dextrorotatory isomer) as colorless waxes.

Example 3 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

This diastereomer is the less polar diastereomer from step D.

¹H NMR (400 MHz, DMSO-d₆) δ 8.80 (1H), 7.97 (1H), 7.75 (1H), 7.45 (1H), 7.20 (1H), 6.75 (2H), 4.95 (1H), 4.55 (1H), 4.30 (1H), 3.90 (6H), 3.75 (3H), 3.37 (3H), 3.05 (1H), 1.75 (1H), 1.65 (1H); MS (API-ES, pos) m/z=662 [M+H]

Example 4 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, dextrorotatory diastereomer

This diastereomer is the more polar diastereomer from step D.

¹H NMR (400 MHz, DMSO-d₆) δ 8.95 (1H), 7.95 (1H), 7.80 (1H), 7.50 (1H), 6.80 (2H), 6.70 (1H), 4.70 (1H), 4.20 (1H), 3.90 (6H), 3.75 (3H), 3.65 (1H), 3.40 (3H), 3.00 (1H), 2.80 (1H), 2.65 (3H), 2.45 (3H), 1.70 (2H); MS (API-ES, pos) m/z=662 [M+H]

Example 5 and Example 6 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

A) 5-Chloro-3-(2-methoxy-pyridin-3-yl)-3-hydroxy-1,3-dihydroindol-2-one

A 1.7 M solution of tert-butyllithium in pentane (28.9 ml, 49.1 mmol) was added to THF (100 ml) at −78° C. 2-Bromomesitylene (3.6 ml, 23.4 mmol) was added dropwise and the mixture stirred at −78° C. for 1 h. 2-Methoxypyridine (1.92 ml, 18 mmol) was added at −78° C. and then the mixture was stirred at 0° C. for 1 h and at ambient temperature for 0.5 h. A suspension of 5-chloroisatin (1.27 g, 9.0 mmol) in THF (50 ml) was added dropwise at −78° C. The reaction mixture was allowed to warm to room temperature and then saturated ammonium chloride solution was added. The mixture was extracted three times with ethyl acetate, and the collected extracts were washed with saturated brine. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by crystallization from dichloromethane yielded 1.1 g of the intermediate.

B) 3,5-Dichloro-3-(2-methoxy-pyridin-3-yl)-1,3-dihydroindol-2-one

Pyridine (0.33 ml) and thionyl chloride (0.30 ml) were added successively to an ice-cold solution of the intermediate from step A (1.1 g, 3.44 mmol) in dichloromethane (10 ml). The reaction mixture was stirred at 0° C. for 1 h and then saturated ammonium chloride solution was added. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. The crude intermediate was rapidly employed without further purification in the next step.

C) (2S,4R)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

(2S,4R)-4-Hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride (0.67 g, 3.44 mmol) was added to a solution of the intermediate from step B in a mixture of dichloromethane (10 ml), THF (2 ml) and DIPEA (1.6 ml). The reaction mixture was stirred at room temperature for 18 h. After addition of water, the mixture was extracted four times with ethyl acetate. The combined organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) resulted in 0.58 g of the more polar diastereomer, 0.2 g of the less polar diastereomer and 0.4 g of a mixture of diastereomers (ratio about 1:1).

Example 5 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

Sodium hydride (14.4 mg of 60% dispersion in mineral oil, 0.36 mmol) was added to an ice-cold solution of the more polar diastereomer intermediate from step C (150 mg, 0.35 mmol) in DMF (3.2 ml). The reaction mixture was stirred at 0° C. for 1 h and then 2,4-dimethoxy-benzenesulfonyl chloride (86.2 mg, 0.364 mmol) was added. After the reaction mixture had been stirred at room temperature for one hour, water was added, and the mixture was extracted with ethyl acetate. The organic layer was washed with water and brine and dried over magnesium sulfate. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) and trituration with diethyl ether (6 ml) and hexane (6 ml) resulted in 130 mg of the levorotatory diastereomer as a white solid.

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −233;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 8.00 (1H), 7.80 (1H), 7.45 (1H), 7.00 (2H), 6.75 (2H), 4.95 (1H), 4.55 (1H), 4.35 (1H), 3.85 (3H), 3.75 (3H), 3.35 (3H), 3.00 (1H), 2.55 (3H), 2.45 (3H), 1.65 (2H); MS (API-ES, pos) m/z=631 [M+H]

Example 6 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, dextrorotatory diastereomer

The diastereomer product was prepared by the method described in the previous paragraph starting from the less polar diastereomer intermediate from step C. Purification by chromatography (silica gel, 5% MeOH in dichloromethane) and trituration with diethyl ether/hexane resulted in the dextrorotatory diastereomer as a white solid.

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): +142;

¹H NMR (400 MHz, DMSO-d₆) δ 8.45 (1H), 8.13 (1H), 7.97 (1H), 7.80 (1H), 7.50 (1H), 7.20 (1H), 6.80 (2H), 6.55 (1H), 4.70 (1H), 4.25 (1H), 3.90 (3H), 3.80 (3H), 3.65 (1H), 3.35 (3H), 3.00 (1H), 2.75 (1H), 2.65 (3H), 2.40 (3H), 1.70 (2H); MS (API-ES, pos) m/z=631 [M+H]

The following compounds can be prepared in an analogous fashion to examples 1 to 6 employing the synthetic route that is outlined in synthesis scheme 1:

Example 7 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methyl-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 8 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-chloropyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 9 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methoxy-pyridin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidin-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(3-methoxy-pyridin-2-yl)-1,3-dihydro-indol-2-one

A 1.7 M solution of tert-butyllithium in pentane (57.8 mL) was added to THF (200 ml) at −78° C. 2-Bromomesitylene (3.6 mL) was added dropwise, keeping the temperature below −60° C., and the mixture stirred at −78° C. for 1 h. 3-Methoxypyridine (3.6 mL) was added dropwise at −78° C. and then the mixture was stirred between −30° C. and −20° C. The reaction mixture was re-cooled to −78° C. and a slurry of 5-chloroisatin (3.26 g) in THF (100 mL) was added portionwise, keeping the temperature below −60° C. The reaction mixture was stirred at −78° C. for 1 h. The cooling bath was removed and the reaction mixture was stirred for 30 min. The reaction mixture was quenched with 10% aqueous ammonium chloride solution and extracted several times with ethyl acetate. The combined organic layers were washed with water, dried over magnesium sulfate and evaporated to low volume. Upon standing, 1.05 g of a cream-colored solid separated which was filtered off, washed with ethyl acetate and dried in vacuo.

The subsequent steps were performed in analogous fashion to Examples 5 and 6.

Example 9

¹H NMR (400 MHz, DMSO-d₆) δ 8.15 (1H), 7.95 (1H), 7.75 (1H), 7.43 (3H), 6.90 (1H), 6.75 (2H), 5.75 (1H), 4.70 (1H), 4.20 (1H), 3.90 (3H), 3.75 (3H), 3.25 (3H), 3.05 (1H), 2.70 (3H), 2.45 (3H), 1.95 (1H), 1.60 (1H); MS (API-ES, pos) m/z=631 [M+H]

Example 10 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(4-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(4-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one

A 1.7 M solution of tert-butyllithium in pentane (43.4 mL) was added to THF (150 ml) at −78° C. 2-Bromomesitylene (5.4 mL) was added dropwise, keeping the temperature below −60° C., and the mixture stirred at −78° C. for 1 h. 4-Methoxypyridine (2.75 mL) was added dropwise at −78° C. and then the mixture was stirred at −30° C. to −20° C. for 3.5 h. The reaction mixture was re-cooled to −78° C. and a slurry of 5-chloroisatin (2.44 g) in THF (120 mL) was added portionwise, keeping the temperature below −65° C. The reaction mixture was stirred at −78° C. for 30 min. The reaction mixture was allowed to warm to −20° C. and then 10% aqueous ammonium chloride solution (75 mL) was added. After stirring for 10 min, the white solid was filtered off, washed with water (excess) and ethyl acetate (20 mL). Yield after drying in vacuo: 1.8 g (42%).

MS (API-ES, pos) m/z=383 [M+H]

The subsequent steps were performed in analogous fashion to Examples 5 and 6.

Example 10

¹H NMR (400 MHz, DMSO-d₆) δ 8.85 (1H), 8.40 (1H), 8.00 (1H), 7.75 (1H), 7.45 (1H), 7.05 (1H), 6.95 (1H), 6.75 (2H), 4.95 (1H), 4.60 (1H), 4.35 (1H), 3.85 (3H), 3.75 (3H), 3.35 (3H), 3.00 (1H), 2.55 (3H), 2.45 (3H), 1.60 (2H); MS (API-ES, pos) m/z=631 [M+H]

Example 11 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(4-methyl-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 12 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-pyrazin-2-yl-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 13 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methoxy-pyrazin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(3-methoxy-pyrazin-2-yl)-1,3-dihydro-indol-2-one

n-BuLi (26 mmol, 16.3 mL of a 1.6M solution in hexanes) was added dropwise to a solution of 2,2,6,6-tetramethylpiperidine (26 mmol, 4.4 mL) in THF (150 mL) at 0° C. After stirring for 30 min at 0° C., the solution was cooled to −78° C. and a solution of 2-methoxypyrazine (20 mmol, 1.93 mL) in THF (30 mL) was added dropwise. After stirring at −78° C. for 15 min, a suspension of 5-chloroisatin (10 mmol, 1.82 g) in THF (50 mL) was added. The reaction mixture was stirred at 0° C. for 2 h, then saturated ammonium chloride solution was added. The mixture was extracted three times with ethyl acetate, and the collected extracts were washed with saturated brine. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by crystallization from diethyl ether yielded 1.14 g of the required intermediate.

The subsequent steps were performed in analogous fashion to Examples 5 and 6.

Example 13

¹H NMR (500 MHz, DMSO-d₆) δ 8.23 (1H), 8.17 (1H), 7.95 (1H), 7.75 (1H), 7.47 (1H), 7.15 (1H), 6.75 (2H), 5.05 (1H), 4.65 (1H), 4.25 (1H), 3.87 (3H), 3.67 (3H), 3.50 (3H), 3.00 (1H), 2.65 (3H), 1.90 (1H), 1.65 (1H); MS (API-ES, pos) m/z=632 [M+H]

Example 14 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3,6-dim ethoxy-pyridazin-4-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 15 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(isoquinolin-4-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 16 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(quinolin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 17 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(thiazol-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 18 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(1-methyl-1H-benzimidazol-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 19 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(1-methyl-1H-imidazol-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 20 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(benzoxazol-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 21 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-benzo[b]thiophen-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 22 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 23 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(benzo[b]thiophen-7-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 24 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(benzofuran-7-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 25 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(benzofuran-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 26 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-furan-2-yl)-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 27 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-furan-3-yl-oxo-2,3-dihydro-1Hl -indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 28 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H -indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(2-methoxy-phenyl)-1,3-dihydroindol-2-one

Magnesium turnings (40 g, 1.65 mol) are introduced into diethyl ether (100 ml) and, while stirring, a solution of 2-bromoanisole (206 ml, 1.65 mol) in diethyl ether (450 ml) is added dropwise. The reaction can be initiated, if necessary, by adding iodine crystals. During the addition, the reaction mixture should boil gently. After the addition, the mixture was stirred at room temperature for 1 hour. A slurry of 5-chloroisatin (75 g, 0.41 mol) in THF (750 ml) was added to the Grignard solution while cooling slightly (temperature 18-24° C.), and the mixture was stirred at room temperature for 30 min. The reaction mixture was stirred into ammonium chloride solution and extracted several times with ethyl acetate. The combined organic phase was washed four times with water, dried over magnesium sulfate and concentrated under reduced pressure. The remaining residue was stirred with 2-propanol. The resulting precipitate was filtered off, washed with 2-propanol and diethyl ether and dried. 106 g of the desired intermediate were obtained.

B) (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide

Pyridine (56 ml) and thionyl chloride (38 ml) were successively added dropwise to an ice-cold solution of the intermediate from step A (100 g, 0.345 mol) in dichloromethane (1 000 ml). The reaction mixture was stirred at 0° C. for 30 min and then stirred into ice-water. The organic phase was separated, and the aqueous phase was extracted once more with dichloromethane. The combined organic phase was washed several times with water, dried over magnesium sulfate and concentrated under reduced pressure. The residue was stirred with hot toluene. The resulting crystals were filtered off in the cold, washed with toluene and pentane and dried. 79 g of the desired 3-chloro intermediate were obtained.

(2S,4R)-4-Hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride (12.6 g, 65 mmol) was added to a solution of the 3-chloro intermediate (20.0 g, 65 mmol) in dichloromethane (400 ml) and DIPEA (28 ml, 162 mmol). The solution was stirred at room temperature overnight. The reaction mixture was diluted with dichloromethane and washed with dilute sodium bicarbonate and several times with water. The organic phase was dried over magnesium sulfate and concentrated under reduced pressure. The residue was recrystallized from acetone. 6.5 g of the less polar (as judged by thin-layer-chromatography on silica gel, 7% MeOH in dichloromethane) diastereomer were obtained. The mother liquor was concentrated under reduced pressure. Purification of the remaining residue by chromatography (silica gel, 7% MeOH in dichloromethane) resulted in 1.0 g of the less polar diastereomer and 17.3 g of the more polar diastereomer.

C) (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

Potassium tert-butoxide (38 mg, 0.34 mmol) was added to an ice-cold solution of the more polar diastereomer from step B (150 mg, 0.34 mmol) in DMF (3 ml), and the mixture was stirred at 0° C. for 30 min. After addition of 8-quinolinesulfonyl chloride (79 mg, 0.34 mmol), the reaction mixture was left to stir at room temperature for 3 hours. Water was added to the reaction mixture, which was then extracted with ethyl acetate. The organic layer was washed with water and saturated brine and dried over magnesium sulfate. Purification by chromatography (silica gel, 7% MeOH in dichloromethane) resulted in 159 mg of the product.

[α]_(D) ^(20° C.) (c=0.20, CHCl₃): −148;

¹H-NMR (D₆-DMSO): δ=1.4-1.6(5H), 1.7(2H), 1.9(2H), 2.15-2.35(4H), 2.45(3H), 2.9(2H), 3.25(4H), 3.7(3H), 4.15(2H), 6.55(1H), 6.6(1H), 6.75-6.90(3H), 7.05-7.2(2H), 7.40(1H), 7.65(1H), 7.9(1H), 8.0(1H), 8.15(1H) and 8.85(1H) ppm; MS (API-ES, pos) m/z=621 [M+H]

Examples 29 to 61 can be prepared in analogous fashion to Example 28 using Example 28B (more polar diastereomer) as the starting material in the sulfonylation reaction. Heterocyclic sulfonyl chlorides were acquired from commercial suppliers or synthesized according to standard methods, for example according to the following procedure:

5-Methyl-pyridine-2-sulfonyl chloride

Chlorine gas was bubbled through a solution of 2-mercapto-5-methylpyridine (64 mmol, 8.00 g, from Ubichem) in conc. hydrochloric acid (80 mL) at 0° C. After 1 h, the reaction mixture was poured into an ice-water mixture (200 mL). The suspension was extracted several times with dichloromethane and the combined organic layers were washed with sodium bicarbonate solution. After drying over sodium sulfate, the volatiles were evaporated in vacuo to yield 9.80 g (80%) of a colorless oil which solidified in the refrigerator.

5-Trifluoromethyl-pyridine-2-sulfonyl chloride, 5-Bromo-pyridine-2-sulfonyl chloride, 5-Bromo-3-methyl-pyridine-2-sulfonyl chloride, Pyridine-2-sulfonyl chloride, 4-Methyl -pyridine-2-sulfonyl chloride, 6-Methyl-pyridine-2-sulfonyl chloride, 5-Chloro-pyridine-2-sulfonyl chloride were prepared in analogous fashion.

Example 29 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H-NMR (D₆-DMSO): δ=1.65(1H), 2.05(1H), 2.4-2.6(6H), 2.8 (1H), 3.0(3H), 3.1 (1H), 4.3(1H), 4.45(1H), 4.95(1H, OH), 6.8(1H), 6.9(1H), 7.0(1H), 7.25-7.35(2H), 7.4(1H), 7.65(1H) and 8.0-8.2(3H) ppm; MS (API-ES, pos) m/z=576 [M+H]

Example 30 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 31 (2S,4R)-1-[5-Chloro-1-(5-chloro-thiophene-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.12, CHCl₃): −131;

¹H-NMR (D₆-DMSO): δ=1.7(1H), 2.0(1H), 2.35-2.55(6H), 2.65(1H), 2.95(1H), 3.2(3H), 4.25(1H), 4.45(1H), 4.7(broad, 1H, OH), 6.8(1H), 6.9(1H), 7.0(1H), 7.25(1H), 7.30(1H), 7.35(1H), 7.60(1H), 7.90(1H) and 8.05(1H) ppm.

Example 32 (2S,4R)-1-[1-(3-Bromo-5-chloro-thiophene-2-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.17, CHCl₃): −142;

¹H-NMR (CDCl₃) δ=1.75(1H), 1.9(1H), 2.3(1H), 2.4(3H), 2.75(3H), 3.3(1H), 3.6(3H), 4.65(1H), 4.8(1H), 6.8(1H), 7.0(2H), 7.1 (1H), 7.3(1H), 7.8(1H) and 7.9(1H) ppm.

Example 33 (2S,4R)-1-[1-(4-Bromo-5-chloro-thiophene-2-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 34 (2S,4R)-1-[5-Chloro-1-(5-methyl-thiophene-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 35 (2S,4R)-1-[5-Chloro-1-(4,5-dichloro-thiophene-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 36 (2S,4R)-1-[5-Chloro-1-(3-methylbenzo[b]thiophene-2-sulfonyl)-3-(2-methoxyphenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 37 (2S,4R)-1-[1-(Benzo[b]thiophene-2-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.18, CHCl₃): −146;

¹H-NMR (D₆-DMSO): δ=1.65(1H), 2.0(1H), 2.3-2.5(7H), 2.75(1H), 2.85(3H), 4.3(1H), 4.45(1H), 4.9(1H, OH), 6.8(1H), 6.95(1H), 7.0(1H), 7.25(1H), 7.45(1H), 7.55(1H), 7.6(1H), 7.7(1H), 8.05(1H), 8.1(1H), 8.15(1H), and 8.55(1H) ppm.

Example 38 (2S,4R)-1-[5-Chloro-1-(5-chloro-3-methyl-benzo[b]thiophene-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.19, CHCl₃): −104;

¹H-NMR (CDCl₃): δ=1.7(2H), 2.4(3H), 2.5-2.8(4H), 2.9(3H), 3.3-3.5(4H), 4.55(1H), 4.7(1H), 6.7(1H), 7.0(1H), 7.1(1H), 7.25(1H), 7.45(1H), 7.75(1H) and 7.7-7.9(3H) ppm.

Example 39 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.20, CHCl₃): −152;

¹H-NMR (D₆-DMSO): δ=1.7(2H), 2.3-2.5(8H), 3.1(3H), 3.75(3H), 4.35(1H), 4.55(1H), 4.9(1H,OH), 6.85(1H), 6.9(1H), 7.0(1H), 7.3(1H), 7.4(1H), 7.75(1H), 7.85(1H) and 8.25(1H) ppm.

Example 40 (2S,4R)-1-[5-Chloro-1-(1,2-dimethyl-1H-imidazole-4-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.20, CHCl₃): −161

Example 41 (2S,4R)-1-[5-Chloro-1-(5-chloro-1,3-dimethyl-1H-pyrazole-4-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 42 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(1,3,5-trimethyl-1H-pyrazole-4-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 43 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(5-methyl-1-phenyl-1H-pyrazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 44 (2S,4R)-1-[5-Chloro-1-(3,5-dimethyl-isoxazole-4-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 45 (2S,4R)-1-[5-Chloro-1-(2,4-dimethyl-thiazole-5-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.21, CHCl₃): −152;

¹H-NMR (CDCl₃) δ=1.75(1H), 1.9(1H), 2.4(3H), 2.6-2.9(10H), 3.3(1H), 3.5(3H), 4.6(1H), 4.75(1H), 6.75(1H), 6.95(1H), 7.1(1H), 7.2(2H), 7.8(1H) and 7.9(1H) ppm; MS (API-ES, pos) m/z=605 [M+H]

Example 46 (2S,4R)-1-[5-Chloro-1-(6-chloro-imidazo[2,1-b]thiazole-5-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.22, CHCl₃): −127;

MS (API-ES, pos) m/z=650 [M+H]

Example 47 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.80 (1H), 8.35 (1H), 8.25 (1H), 8.00 (1H), 7.80 (2H), 7.45 (1H), 7.30 (1H), 7.00 (1H), 6.95 (1H), 6.85 (1H), 4.95 (1H), 4.50 (1H), 4.30 (1H), 3.10 (3H), 2.45 (4H), 1.65 (1H); MS (API-ES, pos) m/z=571 [M+H]

Example 48 (2S,4R)-1-[1-(5-Bromo-pyridine-2-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.95 (1H), 8.50 (1H), 8.30 (1H), 8.00 (1H), 7.77 (1H), 7.40 (1H), 7.30 (1H), 7.03 (1H), 6.97 (1H), 6.90 (1H), 4.90 (1H), 4.45 (1H), 4.30 (1H), 3.27, 2.40 (4H), 1.60 (1H); MS (API-ES, pos) m/z=649 [M+H]

Example 49 (2S,4R)-1-[5-Chloro-1-(5-trifluoro-methyl-pyridine-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 50 (2S,4R)-1-[5-Chloro-1-(5-methoxy-pyridine-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 51 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.63 (1H), 8.25 (1H), 8.00 (2H), 7.80 (1H), 7.40 (1H), 7.25 (1H), 7.00 (1H), 7.95 (1H), 6.85 (1H), 4.90 (1H), 4.50 (1H), 4.30 (1H), 3.15, 2.45 (7H), 1.65 (1H); MS (API-ES, pos) m/z=585 [M+H]

Example 52 (2S,4R)-1-[5-Chloro-1-(5-chloro-pyridine-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.85 (1H), 8.35 (2H), 8.00 (1H), 7.75 (1H), 7.40 (1H), 7.30 (1H), 7.00 (2H), 6.40 (1H), 4.90 (1H), 4.40 (1H), 4.30 (1H), 3.30, 2.40, 1.60 (1H); MS (API-ES, pos) m/z=605 [M+H]

Example 53 (2S,4R)-1-[1-(5-Bromo-3-methyl-pyridine-2-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.75 (1H), 8.40 (1H), 8.00 (1H), 7.70 (1H), 7.40 (1H), 7.30 (1H), 7.00 (2H), 6.93 (1H), 5.00 (1H), 4.50 (1H), 4.35 (1H), 3.45 (3H), 2.80 (3H), 2.35, 1.65 (1H); MS (API-ES, pos) m/z=663 [M+H]

Example 54 (2S,4R)-1-[5-Chloro-1-(3,5-dimethyl-pyridine-2-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.43 (1H), 7.95 (1H), 7.85 (1H), 7.75 (1H), 7.40 (1H), 7.30 (1H), 7.00 (2H), 6.90 (1H), 4.95 (1H), 4.55 (1H), 4.40 (1H), 3.40 (3H), 2.75 (3H), 2.35, 1.63 (1H); MS (API-ES, pos) m/z=599 [M+H]

Example 55 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(pyridine-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 9.33 (1H), 8.90 (1H), 8.60 (1H), 8.10 (1H), 7.75 (2H), 7.40 (1H), 7.30 (1H), 7.05 (1H), 7.00 (1H), 6.85 (1H), 4.95 (1H), 4.45 (1H), 4.20 (1H), 3.20 (3H), 3.15 (1H), 2.70 (1H), 2.30 (3H), 2.00 (1H), 1.60 (1H); MS (API-ES, pos) m/z=571 [M+H]

Example 56 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(6-morpholin-4-yl-pyridine-3-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.75 (1H), 8.12 (1H), 8.00 (1H), 7.70 (1H), 7.37 (1H), 7.30 (1H), 7.00 (2H), 6.93 (1H), 6.87 (1H), 4.90 (1H), 4.47 (1H), 4.25 (1H), 3.65 (8H), 3.20 (3H), 2.30-2.45 (5H), 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=656 [M+H]

Example 57 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(6-phenoxy-pyridine-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 58 (2S,4R)-1-[5-Chloro-1-(6-methoxypyridine-3-sulfonyl)-3-(2-methoxyphenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 59 (2S,4R)-1-[5-Chloro-1-(5-bromo-6-chloropyridine-3-sulfonyl)-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide Example 60 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(4-methyl-3,4-dihydro-2H -benzo[1,4]oxazine-7-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate Example 61 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

(−)-(2S,4R)-1-{5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-[2-(2,2,2-trifluoro-acetyl)-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl]-2,3-dihydro-1H-indol-3-yl}-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide (obtained from Example 28B (more polar diastereomer) and commercially available 2-(2,2,2-Trifluoro-acetyl)-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl chloride) (1.39 mmol, 1.00 g) was deprotected using K₂CO₃ (1 eq.) at RT for 6 h in a 9:1 MeOH:H₂O mixture (22 mL). The solution was evaporated in vacuo. The residue was dissolved in a 1:1 CH₂Cl₂:H₂O mixture and the phases were separated. The organic phase was dried over magnesium sulfate and evaporated in vacuo to afford 850 mg of the required product.

¹H-NMR (400 MHz, DMSO-d₆) δ 9.06 (2H, s br.), 8.22-7.91 (3H, m), 7.72 (1H, d), 7.56 (1H, d), 7.38 (1H, d), 7.27 (1H, t), 7.02 (1H, t), 6.96 (1H, s), 6.83 (1H, d), 3.40 (2H, s br.), 3.08 (2H, t), 3.02 (2H, s br.), 2.05 (1H, m br.), 1.72-1.57 (1H, m); MS (API-ES, pos) m/z=625 [M+H]

Example 62 5-Chloro-1-(2,4-dimethox-benzenesulfonyl)-3-hydroxy-3-(3-methyl-thiophen-2-yl)-1,3-dihydro-indol-2-one

A) 5-Chloro-3-hydroxy-3-(3-methyl-thiophen-2-yl)-1,3-dihydro-indol-2-one

Magnesium turnings (6.8 g, 0.27 mmol) are introduced into diethyl ether (30 ml), and, while stirring, a solution of 2-bromo-3-methyl-thiophene (50 g, 0.282 mol) in diethyl ether (100 ml) is added dropwise. The reaction can be initiated if necessary by adding iodine crystals. During the addition, the reaction mixture should boil gently. After the addition, the mixture was stirred at room temperature for 1 hour. A suspension of 5-chloroisatin (19 g, 0.105 mol) in THF (200 ml) was added to the Grignard solution while cooling slightly (temperature 18-24° C.) and the mixture was stirred at room temperature for 30 min. The reaction mixture was stirred into ammonium chloride solution and extracted several times with ethyl acetate. The combined organic phases were washed with saturated brine, dried over magnesium sulfate and concentrated under reduced pressure. The residue was stirred with diethyl ether. The resulting precipitate was filtered off, washed with diethyl ether and dried. 26 g of the desired intermediate were obtained.

B) 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-hydroxy-3-(3-methyl-thiophen-2-yl)-1,3-dihydro-indol-2-one

Potassium tert-butoxide (1.21 g, 10.8 mmol) was added to an ice-cold solution of the intermediate from step A (3.00 g, 10.8 mmol) in DMF (30 ml), and the mixture was stirred at 0° C. for 30 min. After addition of 2,4-dimethoxy-benzenesulfonyl chloride (2.5 g, 10.8 mmol), the reaction mixture was left to stir at 0° C. for 1 hour. Further addition of 0.2 equivalent each of potassium tert-butoxide and sulfonyl chloride led to no further advance in the reaction according to thin-layer chromatography. The reaction mixture was stirred into dilute potassium carbonate solution, and the resulting precipitate was filtered off. The precipitate was taken up in ethyl acetate, and the extract was washed with saturated brine and dried over magnesium sulfate. Purification by chromatography (silica gel, gradient 30% to 50% ethyl acetate in heptane) and recrystallization from diethyl ether resulted in 0.96 g of the desired product.

¹H-NMR (D₆-DMSO) δ=1.55(3H), 3.6(3H), 3.85(3H), 6.7(1H), 6.75(2H), 7.2(1H), 7.35(1H), 7.55(1H), 7.6(1H), 7.8(1H) and 7.9(1H) ppm.

Example 63 (4-Chloro-phenyl)-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylester

4-Chlorophenyl isocyanate (32 mg, 0.208 mmol) and DMAP (5 mg) were successively added to a solution of example 62 (100 mg, 0.21 mmol) in toluene (20 ml) and stirred at 90° C. for 30 min. The solvent was removed under reduced pressure, and the residue was taken up in ethyl acetate. The organic phase was washed with dilute citric acid solution and saturated sodium chloride solution, dried over magnesium sulfate and concentrated under reduced pressure. Recrystallization from methanol resulted in 80 mg of the desired product.

¹H-NMR (D₆-DMSO) δ=1.95(3H), 3.85(3H), 3.9(3H), 6.6(1H), 6.7(1H), 6.75(1H), 7.05(1H), 7.7(1H), 7.4-7.5(2H), 7.6-7.75(5H) and 9.25(1H) ppm.

Example 64 5-Chloro-3-hydroxy-3-(2-methoxy-phenyl)-1-(quinoline-8-sulfonyl)-1,3-dihydro-indol-2-one

Potassium tert-butoxide (0.81 g, 7.25 mmol) was added to an ice-cold solution of Example 28A (2.00 g, 6.90 mmol) in DMF (24 ml), and the mixture was stirred at 0° C. for 60 min. After addition of 8-quinoline-sulfonyl chloride (1.65 g, 7.25 mmol), the reaction mixture was left to stir at 0° C. for 2 hours and then at room temperature overnight. The reaction mixture was stirred into dilute potassium carbonate solution, and the resulting precipitate was filtered off, washed with water and dried. Purification by chromatography (silica gel, 10% MeOH in dichloromethane) resulted in 1.8 g of the product.

¹H-NMR (D₆-DMSO) δ=2.75(3H), 6.75(1H), 6.8(1H), 7.05(1H), 7.1(1H), 7.3(1H), 7.55(1H), 7.7(1H), 7.75(1H), 7.9(1H), 8.2(1H), 8.45(1H), 8.6(1H), 8.65(1H) and 8.85(1H) ppm.

Example 65 Piperidine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

A) Carbonic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester phenyl ester

Phenyl chloroformate (0.35 ml, 2.79 mmol) was added dropwise to a solution of example 64 (300 mg, 0.624 mmol) in pyridine (6 ml) while cooling slightly. The reaction mixture was stirred at room temperature overnight. After addition of ice-water, the mixture was extracted with ethyl acetate, and the organic phase was washed several times with dilute citric acid solution and water. The organic phase was dried over magnesium sulfate and concentrated under reduced pressure. The residue was triturated with diethyl ether, and the resulting precipitate was filtered off, washed with diethyl ether and dried. 310 mg of the desired intermediate were obtained.

B) Piperidine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

Piperidine (0.132 ml, 1.33 mmol) was added to a solution of the intermediate from step A (200 mg, 0.33 mmol) in THF (10 ml), and the reaction solution was stirred overnight. 2 M sodium hydroxide solution was added to the reaction mixture, which was then extracted with dichloromethane. The organic phase was washed three times with water and concentrated under reduced pressure. Recrystallization from dichloromethane/diethyl ether resulted in 112 mg of the desired product.

¹H-NMR (D₆-DMSO) δ=1.2(2H), 2.85(2H), 3.3(3H), 3.5(2H), 6.9(1H), 7.05(1H), 7.1(1H), 7.35(1H), 7.5(1H), 7.6-7.7(2H), 7.8(1H), 8.1(1H), 8.4(1H), 8.55(1H), 8.6(1H) and 8.8(1H) ppm.

Examples 66 to 76 can be prepared in analogous fashion to Example 65:

Example 66 4-Pyridin-4-yl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 67 3,4,5,6-Tetrahydro-2H-[4,4′]bipyridinyl-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 68 4-Pyridin-2-yl-piperazine-1-carboxylic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 69 4-Pyridin-2-yl-piperazine-1-carboxylic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 70 4-Pyridin-2-yl-piperazine-1-carboxylic acid 5-chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 71 4-Pyridin-4-yl-piperazine-1-carboxylic acid 5-chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 72 4-Pyridin-2-yl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 73 4-Pyridin-4-yl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 74 3,4,5,6-Tetrahydro-2H-[4,4′]bipyridinyl-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 75 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester bismethanesulfonate

¹H-NMR (D₆-DMSO): δ=1.35(2H), 1.65(2H), 1.8(2H), 2.05-2.2(4H), 2.25(2H), 2.45(2H), 2.75(2H), 2.85(2H), 3.3(3H), 3.45(1H), 3.55(1H), 6.90(1H), 7.05(1H), 7.15(1H), 7.35(1H), 7.5(1H), 7.6-7.7(2H), 7.8(1H), 8.10(1H), 8.4(1H), 8.55(1H), 8.65(1H), 8.8(1H) and 10.9(broad) ppm.

Example 76 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (2H), 8.10 (2H), 7.80 (2H), 7.70 (2H), 7.50 (1H), 7.30 (1H), 7.20 (1H), 3.60 (2H), 3.10 (2H), 2.75 (2H), 2.35 (2H), 2.15 (4H), 1.85 (2H), 1.70 (2H), 1.40 (4H); MS (API-ES, pos) m/z=640 [M+H]

Examples 77 to 82 bearing an amide moiety in the 3-position of the oxindole core were prepared employing synthetic methods that are outlined in synthetic scheme 3:

Example 77 N-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-acetamide

¹H-NMR (D₆-DMSO): δ=1.8(3H), 3.55(3H), 6.75(1H), 7.0(1H), 7.05(1H), 7.2-7.35(1H), 7.65(1H), 7.85(1H), 7.95(1H), 8.4(1H), 8.55(1H), 8.65(1H), 8.75(1H) and 8.95(1H) ppm.

Example 78 3,4,5,6-Tetrahydro-2H-[1,4′]bipyridinyl-4-carboxylic acid [5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide Example 79 3,4,5,6-Tetrahydro-2H-[1,4′]bipyridinyl-4-carboxylic acid [5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide Example 80 (E)-N-[5-Chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-3-pyridin-4-yl-acrylamide

¹H-NMR (D₆-DMSO): δ=3.85(3H), 6.45(1H), 6.65(1H), 6.85(1H), 6.9(1H), 7.15, 7.3(3H), 7.35(2H), 7.4-7.6(2H), 7.75(1H), 8.1-8.3(4H), 8.6(1H) and 8.75-8.85(2H) ppm.

Example 81 (E)-N-[3-(2-Methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-3-pyridin-4-yl-acrylamide Example 82 3,4,5,6-Tetrahydro-2H-[1,4′]bipyridinyl-4-carboxylic acid [5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide

¹H NMR (400 MHz, DMSO-d₆) δ 9.05 (1H), 8.20 (1H), 8.15 (2H), 7.90 (1H), 7.70 (1H), 7.50 (1H), 7.40 (1H), 7.35 (1H), 7.00 (1H), 6.80 (2H), 6.65 (2H), 3.80 (8H), 3.50 (3H), 2.90 (2H), 1.75 (1H), 1.60 (1H), 1.35 (2H); MS (API-ES, pos) m/z=678 [M+H]

The procedure for the synthesis of Example 83 is representative for the synthesis of examples that bear a urea moiety in the 3-position of the oxindole.

Example 83 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

A) 3-(2-Ethoxy-phenyl)-3-hydroxy-5-methoxy-1,3-dihydro-indol-2-one

40 g (1.65 mol) of magnesium chips and 5% of the total amount of the 2-bromo-1-ethoxy benzene were added to 100 ml diethyl ether and after adding a few crystals iodine the mixture was carefully heated to initiate the reaction. To the refluxing mixture the remaining amount of 203 ml (1.65 mol) 2-bromo-1-ethoxy benzene, dissolved in 450 ml diethyl ether, was added slowly to maintain the reaction. Then 75 g (0.41 mol) of 5-methoxyisatine, suspended in 750 ml THF, were added to the cooled reaction mixture. After stirring the reaction mixture for 30 minutes at ambient temperature, the mixture was poured into an ice/aqueous NH₄Cl mixture. The aqueous phase was extracted with ethyl acetate several times and the combined organic phase was washed with H₂O, dried over magnesium sulfate and the solvent was removed in vacuo.

B) 3-Chloro-3-(2-ethoxy-phenyl)-5-methoxy-1,3-dihydro-indol-2-one

5 g (16.7 mmol) of the intermediate from step A and 2.6 g (33.4 mmol) pyridine were dissolved in 50 mL CH₂Cl₂ and at 0° C. 3 g (25.1 mmol) SOCl₂ were added slowly. Then the reaction mixture was stirred for 30 min. at 0° C. The reaction mixture was poured into an ice/water mixture and the organic phase was separated, washed with H₂O, dried over magnesium sulfate and finally the solvent was removed in vacuo. The resulting residue was suspended in ether. The solid residue was separated and dried to give 3.2 g of the intermediate, which was used without further purification.

C) 3-Amino-3-(2-ethoxy-phenyl)-5-methoxy-1,3-dihydro-indol-2-one

3.2 g (10 mmol) of the intermediate from step B were suspended in 40 ml CH₂Cl₂. 50 ml of a 2M solution of NH₃ in ethanol were added and the reaction mixture was stirred for 16 h at ambient temperature. The mixture was poured into an ice/water mixture and the precipitate was separated. The precipitate was redissolved in ethyl acetate. This organic phase was washed with 2M aqueous HCl. The aqueous phase was made alkaline (pH=8-9) and then extracted with ethyl acetate. The organic phase was dried over magnesium sulfate and the solvent was removed in vacuo to yield 1.7 g of the intermediate.

D) [3-(2-Ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-carbamic acid phenyl ester

1.8 g (6 mmol) of the intermediate from step C were dissolved in 20 ml pyridine. At 0° C. 0.99 g (6.3 mmol) phenyl chloroformate were added and afterwards the reaction mixture was stirred for 1 h at 0° C. This mixture was poured into an ice/water mixture. The pH of the aqueous phase was adjusted to 5 and the resulting mixture was extracted with ethyl acetate. The organic phase was separated, dried over magnesium sulfate and the solvent was removed in vacuo. The resulting solid (2 g) was used in the next step without further purification.

E) 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide

1.9 g (4.5 mmol) of the intermediate from step D and 1.75 g (9.5 mmol) 1-(1-methylpiperidine-4-yl)-piperazine were dissolved in 30 ml dry THF and refluxed for 90 minutes. The volatiles were removed in vacuo. The resulting residue was dissolved in ethyl acetate, washed with H₂O and dried over magnesium sulfate and the solvent was removed in vacuo. The residue was treated with H₂O and the resulting precipitate was separated to yield 1.5 g of the intermediate.

F) 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

200 mg (0.39 mmol) of the intermediate from step E were dissolved in 30 ml THF. At 0° C. 19 mg (0.43 mmol) NaH (55%) were added. After stirring the reaction mixture for 20 min, 99 mg (0.43 mmol) 1-quinoline-8-sulfonylchloride were added. The reaction mixture was stirred for 1 h. The solvent was removed in vacuo. The residue was recrystallized from CH₃OH/H₂O to obtain 180 mg of Example 83.

¹H-NMR (CDCl₃): δ=1.4-1.6(5H), 1.7(2H), 1.9(2H), 2.15-2.35(4H), 2.45(3H), 2.9(2H), 3.25(4H), 3.7(3H), 4.15(2H), 6.55(1H), 6.6(1H), 6.75-6.90(3H), 7.05-7.2(2H), 7.40(1H), 7.65(1H), 7.9(1H), 8.0(1H), 8.15(1H) and 8.85(1H) ppm.

The following examples bearing a carbamate or urea moiety in the 3-position of the oxindole core can be synthesized in analogous fashion to Example 65 or Example 83, respectively.

Example 100 4-Methyl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (D₆-DMSO): δ=2.0-2.2(5H), 2.75(2H), 2.9(2H), 3.3(3H), 3.45(1H), 3.65(1H), 6.90(1H), 7.05(1H), 7.15(1H), 7.35(1H), 7.5(1H), 7.6-7.75(2H), 7.8(1H), 8.1(1H), 8.4(1H), 8.55(1H), 8.65(1H) and 8.8(1H) ppm.

Example 101 Dimethyl-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (D₆-DMSO): δ=2.45(3H), 2.95(3H), 3.3(3H), 6.90(1H), 7.05(1H), 7.15(1H), 7.35(1H), 7.5(1H), 7.65(1H), 7.75(1H), 7.8(1H), 8.1 (1H), 8.4(1H), 8.55(1H), 8.65(1H) and 8.8(1H) ppm.

Example 102 [1,4′]Bipiperidinyl-1′-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester hydrochloride

¹H-NMR (D₆-DMSO): δ=1.2-1.4(4H), 1.6-1.85(6H), 1.95(1H), 2.1(1H), 2.6(1H), 2.8-3.0(3H), 3.25(3H), 3.3(1H), 3.4(1H), 4.2(1H), 6.90(1H), 7.05(1H), 7.15(1H), 7.35(1H), 7.5(1H), 7.6-7.75(2H), 7.8(1H), 8.15(1H), 8.4(1H), 8.55(2H), 8.6(1H), 8.8(1H) and 9.9(broad) ppm.

Example 103 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 1-benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (2H), 8.10 (2H), 7.80 (2H), 7.70 (2H), 7.50 (1H), 7.27 (1H), 7.20 (1H), 4.20 (1H), 3.55 (1H), 3.05 (1H), 2.65 (1H), 2.40 (8H), 2.15 (3H), 1.80 (1H), 1.65 (1H), 1.40 (1H), 1.10 (1H); MS (API-ES, pos) m/z=640 [M+H]

Example 104 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-3-pyridin-2-yl-2,3-dihydro-1H-indol-3-yl ester trishydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.3(2H), 2.7(3H), 2.8-3.9(18H), 4.4(1H), 6.7(2H), 7.35(2H), 7.5(1H), 7.7-8.0(4H), 8.3(1H), and 11.5(broad, N⁺H) and 11.8(broad, N⁺H) ppm.

Example 105 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.15 (1H), 7.90 (1H), 7.80 (1H), 7.50 (1H), 7.25 (1H), 7.15 (1H), 6.70 (2H), 3.85 (3H), 3.60 (7H), 3.50 (1H), 3.10 (2H), 2.80 (2H), 2.30 (2H), 2.15 (4H), 1.80 (2H), 1.65 (2H), 1.35 (4H); MS (API-ES, pos) m/z=700 [M+H]

Example 106 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 7.90 (1H), 7.75 (1H), 7.40 (1H), 7.15 (1H), 7.10 (2H), 6.70 (2H), 3.85 (3H), 3.40-3.70 (8H), 3.10 (2H), 2.80 (2H), 2.40 (3H), 2.10 (3H), 1.80 (2H), 1.65 (2H), 1.35 (4H); MS (API-ES, pos) m/z=666 [M+H]

Example 107 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (400 MHz, CDCl₃) δ 8.20-8.06 (2H, m), 7.92 (1H, d), 7.82 (1H, d), 7.13 (1H, d), 6.94 (1H, t), 6.76 (1H, s), 6.54 (1H, d), 6.43 (1H, s), 4.21 (1H, d), 3.85 (6H, d), 3.77 (1H, m), 3.63 (3H, s), 2.92 (1H, t), 2.71-2.18 (16H, incl. 2.29 (3H, s), 2.24 (3H, s), 1.64 (4H, s br.); MS (API-ES, pos) m/z=680 [M+H]

Example 108 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (2H), 7.90 (3H), 7.75 (1H), 7.17 (1H), 6.70 (2H), 3.85 (3H), 3.60 (4H), 3.55 (3H), 3.50 (1H), 3.10 (2H), 2.75 (2H), 2.30 (2H), 2.15 (4H), 1.80 (2H), 1.65 (2H), 1.20-1.50 (4H); MS (API-ES, pos) m/z=691 [M+H]

Example 109 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (400 MHz, CDCl₃) δ 8.10 (2H, m), 7.92 (1H, d), 7.79 (1H, d), 7.14 (1H, d), 6.94 (1H, m), 6.76 (1H, s), 6.54 (1H, d), 6.41 (1H, s), 3.84 (6H, d), 3.63 (3H, s), 3.58 (2H, s br.), 3.17 (2H, s br.), 2.92 (2H, d), 2.53 (2H, s br.), 2.40 (2H, s br.), 2.26 (3H, s), 2.24 (3H, s), 1.94 (2H, t), 1.85-1.47 (8H, m); MS (API-ES, pos) m/z=680 [M+H]

Example 110 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,4-dimethoxy-benzenesulfonyl)-5-methoxy-3-(2-methyl-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester trishydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.3(2H), 2.7(6H), 3.0(2H), 3.15(1H), 3.3-4.0(18H), 4.3(1H), 6.6(1H), 6.7(1H), 6.9(1H), 7.15(1H), 7.3(1H), 7.4(1H), 7.7(1H), 7.8(1H), 8.6(1H), 10.6(broad, N⁺H) and 11.6(broad, N⁺H) ppm.

Example 111 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2-fluoro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=658 [M+H]

Example 112 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4-fluoro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=658 [M+H]

Example 113 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4-cyano-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=665 [M+H]

Example 114 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(3-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=670 [M+H]

Example 115 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=670 [M+H]

Example 116 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2-chloro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=674 [M+H]

Example 117 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(3-chloro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=674 [M+H]

Example 118 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4-chloro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=674 [M+H]

Example 119 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2,4-difluoro-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=677 [M+H]

Example 120 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4-isopropyl-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=682 [M+H]

Example 121 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(3,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=700 [M+H]

Example 122 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(4-trifluoromethyl-benzenesulfonyl)-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=708 [M+H]

Example 123 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(4-trifluoromethoxy-benzenesulfonyl)-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=724 [M+H]

Example 124 Dimethyl-carbamic acid 3-benzofuran-7-yl-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 125 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-ethoxy-phenyl)-5-methoxy-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.3(3H), 1.6-1.8(2H), 1.8-2.0(4H), 2.2-2.6(8h), 3.1(2H), 3.2-3.4(4H), 3.75(6H), 4.2(2H), 6.7-7.0(7H), 7.2(1H), 7.5(1H), and 7.8(1H) ppm.

Example 126 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methoxy-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.3(2H), 2.7(3H), 2.8-3.8(18H), 4.3(1H), 6.7(1H), 6.95(2H), 7.05(1H), 7.25(1H), 7.35(1H), 7.65(1H), 7.95(1H), 8.15(1H), 10.8(broad, N⁺H) and 11.8(broad, N⁺H) ppm.

Example 127 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-methoxy-phenyl)-5-methyl-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.0(2H), 2.15(3H), 2.3(2H), 2.7(3H), 2.9-3.8(15H), 4.3(1H), 6.85(1H), 6.90(1H), 7.1(1H), 7.2(1H), 7.35(1H), 7.7(1H), 7.8(2H), 8.2(2H), 10.6(broad, N⁺H), and 11.7(broad, N⁺H) ppm.

Example 128 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 3-(2-methoxy-phenyl)-5-methyl-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.4(1H), 1.6(1H), 2.0(1H), 2.2(3H), 2.65(2H), 2.8(3H), 3.0(2H), 3.2-3.8(12H), 4.3(1H), 6.85(1H), 6.9(1H), 7.1(1H), 7.15(1H), 7.35(1H), 7.7(1H), 7.75(1H), 8.2(2H), and 8.8(1H) ppm.

Example 129 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-methoxy-phenyl)-5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.2(3H), 2.3(2H), 2.7(3H), 2.9-3.8(15H), 4.3(1H), 6.9(2H), 7.1 (1H), 7.2(1H), 7.25(1H), 7.35(1H), 7.6(1H), 7.8(1H), 7.95(1H), 8.1 (1H), 10.6(broad, N⁺H) and 11.8(broad, N⁺H) ppm.

Example 130 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 3-(2-methoxy-phenyl)-5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.4(1H), 1.65(1H), 2.0(1H), 2.2(3H), 2.7(2H), 2.8(3H), 3.0(2H), 3.2-3.8(12H), 4.35(1H), 6.85(2H), 6.0(1H), 7.1(1H), 7.15(1H), 7.25(1H), 7.35(1H), 7.6(1H), 7.8(1H), 8.0(1H) and 8.1 (1H) ppm.

Example 131 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.0(2H), 2.2-2.4(8H), 2.7(3H), 2.9-3.8(12H), 4.3(1H), 6.8(1H), 7.1-7.2(2H), 7.2-7.4(4H), 7.7(1H), 7.85(1H), 8.1(1H), 10.6(broad, N⁺H) and 11.8(broad, N⁺H) ppm.

Example 132 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.5(1H), 2.1(1H), 2.25-2.4(6H), 2.7(2H), 2.8(3H), 3.0(2H), 3.2-3.9(10H), 4.25(1H), 6.75(1H), 7.0-7.2(2H), 7.2-7.4(4H), 7.7(1H), 7.8(1H) and 8.1 (1H) ppm.

Example 133 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-methoxy-phenyl)-5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.2(3H), 2.3(3H), 2.7(3H), 2.8-3.7(14H), 3.9(1H), 4.1(1H), 6.9-7.1(4H), 7.25(1H), 7.3(1H), 7.5(1H), 7.85(1H), 7.9(1H), 8.1(1H), 10.6(broad, N⁺H) and 11.4(broad, N⁺H) ppm.

Example 134 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-2-oxo-1-(pyridine-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.9-2.1(2H), 2.25(2H), 2.4(3H), 2.7(3H), 2.8-3.8(14H), 6.7(1H), 7.15(1H), 7.2-7.35(2H), 7.75(1H), 7.9(1H), 8.05(2H), 8.15(2H), 8.6(1H), 10.3(broad, N⁺H) and 11.3(broad, N⁺H) ppm.

Example 135 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-2-oxo-1-(thiophene-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.3(2H), 2.4(3H), 2.7(3H), 2.8-3.2(6H), 3.25-3.8(7H), 4.1-4.4(1H), 6.75(1H), 7.15(1H), 7.2-7.4(3H), 7.9(1H), 8.0(2H), 8.05(1H), 8.2(1H), 10.8(broad, N⁺H) and 11.9(broad, N⁺H) ppm.

Example 136 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-fluoro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.15 (1H), 8.00 (1H), 7.80 (1H), 7.75 (1H), 7.40 (1H), 7.25 (2H), 7.15 (1H), 7.05 (1H), 6.95 (1H), 3.60 (2H), 3.10 (2H), 2.80 (2H), 2.45 (2H), 2.35 (2H), 2.15 (4H), 1.90 (2H), 1.70 (2H), 1.40 (2H); MS (API-ES, pos) m/z=629 [M+H]

Example 137 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methoxy-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=2.1(2H), 2.25-2.4(5H), 2.7(3H), 2.9-3.1(4H), 3.2(1H), 3.3-4.0(13H), 4.3(1H), 6.7(1H), 6.8(1H), 7.1(2H), 7.2-7.3(2H), 7.7(2H), 8.1(1H), 10.6(broad, N⁺H) and 11.6(broad, N⁺H) ppm.

Example 138 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methoxy-3-(2-methoxy-phenyl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₂O): δ=1.95(2H), 2.4(2H), 2.85(3H), 3.1(2H), 3.2-3.8(16H), 4.0(1H), 6.7(1H), 6.9(1H), 7.0(1H), 7.1 (1H), 7.4(1H), 7.7-7.9(3H), 8.2(1H), 8.3(1H), and 8.7(1H) ppm.

Example 139 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.55(2H), 1.7(2H), 1.9(2H), 2.2-2.35(4H), 2.4(2H), 2.4-2.6(2H), 2.9(2H), 3.05(2H), 3.6(2H), 3.7(3H), 3.75(1H), 3.95(1H), 6.55(1H), 6.75(1H), 6.8(1H), 7.0(1H), 7.05(1H), 7.25(1H), 7.6(1H), 7.7(1H), 7.8(1H) and 7.9(1H) ppm.

Example 140 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 141 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-methoxy-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.2(3H), 1.4-1.7(4H), 1.75(2H), 1.9(2H), 2.2-2.5(7H), 2.6(2H), 2.9(2H), 3.1(1H), 3.25(1H), 3.6(2H), 3.7(3H), 3.75(1H), 4.0(1H), 6.5(1H), 6.75(1H), 6.8(1H), 7.0(1H), 7.25(1H), 7.45(1H), 7.7(1H), 7.8(1H) and 7.9(1H) ppm.

Example 142 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.45-1.6(2H), 1.75(2H), 1.9(2H), 2.2-2.3(4H), 2.4(2H), 2.4-2.65(2H), 2.9(2H), 2.95-3.15(2H), 3.6(2H), 3.8(1H), 4.0(1H), 6.8(1H), 6.95(1H), 7.0(1H), 7.1(1H), 7.25-7.35(2H), 7.65(1H), 7.7(1H), 7.85(1H) and 7.9(1H) ppm.

Example 143 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-ethoxy-phenyl)-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.55(2H), 1.75(2H), 1.9(2H), 2.2-2.3(4H), 2.3-2.7(4H), 2.9(2H), 3.1(2H), 3.6(2H), 3.75(3H), 3.8(1H), 4.0(1H), 6.75(2H), 6.95(1H), 7.0(1H), 7.3(2H), 7.5(1H), 7.7(1H) and 7.9(1H) ppm.

Example 144 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.5-1.65(2H), 1.7(2H), 1.9(2H), 2.2-2.35(6H), 2.4-2.7(2H), 2.9(3H), 3.0(1H), 3.45-3.6(2H), 3.8(1H), 4.0(1H), 6.75(2H), 6.9(1H), 7.0(1H), 7.2-7.4(3H), 7.5(1H), 7.65(1H), 7.9(1H), 8.05(1H), 8.25(1H) and 8.7(1H) ppm.

Example 145 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-ethoxy-phenyl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.3(3H), 1.5-1.65(2H), 1.7(2H), 1.9(2H), 2.2-2.4(9H), 2.4-2.6(2H), 2.8-3.0(3H), 3.05(1H), 3.6(2H), 3.8(1H), 4.0(1H), 6.75(1H), 6.9(1H), 7.0(1H), 7.2-7.4(2H), 7.65(2H), 7.65(1H), 8.0(1H), 8.15(1H) and 8.5(1H) ppm.

Example 146 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.4-1.6(5H), 1.75(2H), 1.9(2H), 2.15-2.35(4H), 2.4-2.5(4H), 2.9(2H), 3.1-3.4(4H), 3.7(3H), 4.1-4.3(2H), 6.75-6.95(6H), 7.05(1H), 7.25(1H), 7.6(1H), 7.75(1H) and 7.9(1H) ppm.

Example 147 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.4-1.65(5H), 1.75(2H), 1.9(2H), 2.2-2.35(4H), 2.8-3.1(4H), 2.9(2H), 3.15-3.3(4H), 4.1-4.3(2H), 6.6(1H), 6.8-7.0(2H), 7.0(1H), 7.1 (1H), 7.2-7.35(3H), 7.6(1H), 7.8(1H) and 7.95(1H) ppm.

Example 148 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.2(3H), 1.9-2.1(2H), 2.3(2H), 2.7(3H), 2.75-3.6(13H), 3.8-4.0(2H), 6.95(2H), 7.2(1H), 7.25-7.4(2H), 7.5(1H), 7.75(2H), 7.9(1H), 8.15(2H), 8.8(1H), 10.4(broad, N⁺H) and 11.1(broad, N⁺H) ppm.

Example 149 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.4-1.65(5H), 1.75(2H), 1.95(2H), 2.2-2.35(4H), 2.4-2.55(4H), 2.9(2H), 3.15-3.3(4H), 4.1-4.3(2H), 6.7(1H), 6.8-6.95(2H), 7.0(1H), 7.2-7.35(4H), 7.55(1H), 7.75(1H) and 8.35(1H) ppm.

Example 150 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-chloro-3-(2-ethoxy-phenyl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.4-1.8(7H), 1.9(2H), 2.2-2.35(4H), 2.4-2.55(7H), 2.9(2H), 3.15-3.35(4H), 4.1-4.3(2H), 6.8(1H), 6.85-6.95(2H), 7.0(1H), 7.2-7.35(3H), 7.65(1H), 7.9(1H), 8.15(1H) and 8.50(1H) ppm.

Example 151 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.6(2H), 1.75(2H), 2.0(2H), 2.3(4H), 2.35(2H), 2.5(1H), 2.6(1H), 2.95(2H), 3.0-3.15(2H), 3.55(2H), 3.75(1H), 4.0(1H), 6.7(1H), 6.75(1H), 6.95-7.15(2H), 7.2-7.4(2H), 7.6(1H), 7.7(1H), 7.85(1H) and 7.9(1H) ppm.

Example 152 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-fluoro-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.6-1.9(6H), 2.05(2H), 2.3-2.6(9H), 2.9-3.2(4H), 3.55(2H), 3.8(1H), 4.05(1H), 6.65(1H), 6.75(1H), 6.95-7.1(2H), 7.25(1H), 7.65(1H), 8.0(1H), 8.15(1H) and 8.50(1H) ppm.

Example 153 (2-Diethylamino-ethyl)-methyl-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=0.85(3H), 1.0(3H), 2.1(1H), 2.3(2H), 2.5-2.7(3H), 2.75(1H), 2.45 and 3.0(3H), 3.35(1H), 3.65 and 3.7(3H), 6.80(1H), 6.95(1H), 7.0(1H), 7.3(2H), 7.4(1H), 7.6-7.8(2H), 8.05(1H), 8.15(2H) and 8.75-8.9(2H) ppm.

Example 154 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.40-1.8(6H), 1.90(2H), 2.10-2.40(4H), 2.45(2H), 2.80(2H), 2.9(2H), 3.5(2H), 3.70(3H), 3.8(1H), 4.1 (1H), 6.55(1H), 6.80(1H), 6.85-7.0(2H), 7.25(1H), 7.40(1H), 7.60(2H), 8.00(1H), 8.05-8.2(2H) and 8.75-8.9(2H) ppm.

Example 155 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.40-1.8(6H), 1.90(2H), 2.10-2.40(4H), 2.45(2H), 2.70(2H), 2.9(2H), 3.5(2H), 3.8(1H), 4.05(1H), 6.80(1H), 6.85-7.0(2H), 7.25(1H), 7.3-7.5(2H), 7.5-7.7(2H), 8.05(1H), 8.15(1H), 8.25(1H) and 8.75(2H) ppm.

Example 156 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide

¹H-NMR (CDCl₃): δ=1.5(3H), 1.6(2H), 1.75(2H), 1.95(2H), 2.2-2.35(4H), 2.45(4H), 2.9(2H), 3.2(4H), 4.2(2H), 6.55(1H), 6.6(1H), 6.90(2H), 7.15(1H), 7.30(2H), 7.45(1H), 7.65(1H), 8.05(2H), 8.20(1H), 8.75(1H) and 8.80(1H) ppm.

Example 157 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.4-1.9(6H), 2.0-2.6(8H), 2.7(2H), 3.05(2H), 3.50(2H), 3.8(1H), 4.05(1H), 6.65(1H), 6.75(1H), 6.95(1H), 7.1(1H), 7.30(1H), 7.40(1H), 7.60(1H), 7.65(1H), 8.05(1H), 8.15(1H), 8.25(1H) and 8.75(2H) ppm.

Example 158 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-3-(2-ethoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.25(3H), 1.40-1.75(5H), 1.90(2H), 2.10-2.30(5H), 2.45(2H), 2.60(2H), 2.9(2H), 3.45(2H), 3.70(1H), 4.05(1H), 6.75(1H), 6.95(1H), 7.20(1H), 7.30(1H), 7.40(1H), 7.60-7.80(3H), 8.05(1H), 8.15(1H), 8.50(1H), 8.70(1H) and 8.75(1H) ppm.

Example 159 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (3H), 8.00 (1H), 7.75 (1H), 7.50 (1H), 7.30 (2H), 7.20 (1H), 3.60 (2H), 3.35 (3H), 3.10 (2H), 2.75 (2H), 2.35 (2H), 2.10 (4H), 1.80 (2H), 1.65 (2H), 1.35 (4H); MS (API-ES, pos) m/z=646 [M+H]

Example 160 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (400 MHz, CDCl₃) δ (ppm): 8.73 (1H, d), 8.32 (1H, d), 8.11 (1H, m), 8.00-7.84 (3H, m), 7.56-7.45 (1H, m), 6.94 (1H, t), 6.86 (1H, d), 6.52 (1H, s), 3.73 (1H, d), 3.70 (3H, s), 3.56 (2H, s br.), 3.14 (2H, q br.), 2.94 (2H, d br.), 2.65-1.47 (13H, m br.); MS (API-ES, pos) m/z=637 [M+H]

Example 161 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (400 MHz, CDCl₃) δ (ppm): 8.74 (1H, d), 8.32 (1H, d), 8.11 (1H, m), 8.00-7.86 (3H, m), 7.56-7.50 (1H, m), 6.94 (1H, t), 6.86 (1H, d), 6.52 (1H, s), 3.73 (3H, s), 3.70 (3H, s), 3.56 (2H, s br.), 3.13 (2H, q br.), 2.91 (2H, d br.), 2.65-1.39 (13H, m br.); MS (API-ES, pos) m/z=637 [M+H]

Example 162 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (3H), 8.05 (1H), 7.95 (2H), 7.75 (1H), 7.30 (1H), 7.20 (1H), 3.60 (2H), 3.10 (2H), 2.80 (2H), 2.35 (2H), 2.15 (4H), 2.00 (1H), 1.85 (2H), 1.65 (2H), 1.35 (3H); MS (API-ES, pos) m/z=637 [M+H]

Example 163 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(4,5-dichloro-thiophene-2-sulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=716 [M+H]

Example 164 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(5-chloro-thiophene-2-sulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=680 [M+H]

Example 165 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=646 [M+H]

Example 166 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(1,2-dimethyl-1H-imidazole-4-sulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=658 [M+H]

Example 167 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-1-(4-methyl-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=660 [M+H]

Example 168 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=660 [M+H]

Example 169 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-1-(2,5-dimethyl-thiophene-3-sulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=674 [M+H]

Example 170 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(benzo[b]thiophene-3-sulfonyl)-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=696 [M+H]

Example 171 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=646 [M+H]

Example 172 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(benzo[b]thiophene-2-sulfonyl)-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester diacetate

MS (ESI, pos) m/z=696 [M+H]

Example 173 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 5-chloro-3-(3-methyl-thiophen-2-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride

¹H-NMR (D₆-DMSO): δ=1.4-1.6(3H), 1.8-2.1(3H), 2.8-3.6(15H), 3.7(1H), 4.1(1H), 6.6(1H), 6.95(1H), 7.2-7.4(3H), 7.55(2H), 7.95(1H), 8.0-8.2(2H) and 8.5(1H) ppm.

Example 174 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-chloro-3-(3-methyl-thiophen-2-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester

¹H-NMR (CDCl₃): δ=1.4(2H), 1.65(2H), 1.8-2.0(5H), 2.05-2.15(4H), 2.35(2H), 2.45(2H), 2.8(2H), 3.05(2H), 3.4(2H), 6.8(1H), 7.3(1H), 7.4(1H), 7.55(1H), 7.65(1H), 7.8(1H), 8.0(1H), 8.4(1H), 8.5(2H) and 8.6(1H) ppm.

Example 175 Benzyl-methyl-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 176 4-Benzyl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 177 4-Methyl-piperazine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 178 Pyridin-4-ylmethyl-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 179 Benzyl-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 180 Pyridin-4-ylmethyl-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 181 (3-Imidazol-1-yl-propyl)-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 182 (3-Morpholin-4-yl-propyl)-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-thiophen-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 183 4-Benzoylamino-piperidine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 184 3-Phenyl-piperidine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 185 1,3-Dihydro-isoindole-2-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 186 4-Phenyl-piperidine-1-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 187 (2-Diethylamino-ethyl)-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester hydrochloride Example 188 (2-Dimethylamino-ethyl)-carbamic acid 5-chloro-3-(3-methyl-thiophen-2-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 189 4-Methyl-piperazine-1-carboxylic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-pyridin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 190 Dimethyl-carbamic acid 5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-pyridin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 191 (2-Pyridin-4-yl-ethyl)-carbamic acid 5-chloro-3-(3-methyl-thiophen-2-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 192 6-Methoxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 193 (4-Cyano-thiazol-2-ylmethyl)-carbamic acid 5-chloro-3-(2-methoxy-phenyl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 194 Dimethyl-carbamic acid 5-chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 195 4-Isopropyl-piperazine-1-carboxylic acid 5-chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 196 (5-Dimethylamino-pentyl)-carbamic acid 1-benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 197 4-(2-Morpholin-4-yl-ethyl)-piperazine-1-carboxylic acid 1-benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 198 4-(2-Imidazol-1-yl-ethyl)-piperazine-1-carboxylic acid 1-benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 199 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-benzofuran-7-yl-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 200 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 2-oxo-1-(thiophene-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 201 4-(4-Methyl-piperazin-1-yl)-piperidine-1-carboxylic acid 2-oxo-1-(thiophene-2-sulfonyl)-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 202 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,4-dimethyl-thiazole-5-sulfonyl)-5-methoxy-2-oxo-3-o-tolyl-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 203 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,5-dimethyl-thiophene-3-sulfonyl)-3-(2-isopropoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 204 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-isopropoxy-phenyl)-5-methoxy-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 205 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,5-dimethyl-thiophene-3-sulfonyl)-3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 206 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,5-dimethyl-thiophene-3-sulfonyl)-5-methoxy-2-oxo-3-(2-propoxy-phenyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 207 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-methoxy-2-oxo-3-(2-propoxy-phenyl)-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 208 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-fluoro-1-(1-methyl-1H-imidazole-4-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 209 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(1,2-dimethyl-1H-imidazole-4-sulfonyl)-3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 210 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(3,5-dimethyl-isoxazole-4-sulfonyl)-3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 211 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,5-dimethyl-thiophene-3-sulfonyl)-3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 212 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 3-(2-ethoxy-phenyl)-5-fluoro-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl ester Example 213 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 1-(2,4-dimethyl-thiazole-5-sulfonyl)-3-(2-ethoxy-phenyl)-5-fluoro-2-oxo-2,3-dihydro-1H-indol-3-yl ester dihydrochloride Example 214 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [1-(3,5-dimethyl-isoxazole-4-sulfonyl)-3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide Example 215 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [1-(5-chloro-thiophene-2-sulfonyl)-3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide Example 216 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [1-(2,5-dimethyl-thiophene-3-sulfonyl)-3-(2-ethoxy-phenyl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-amide Example 217 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid 5-cyano-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl ester Example 218 4-(1-Methyl-piperidin-4-yl)-piperazine-1-carboxylic acid [5-cyano-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-amide dihydrochloride

Unless stated otherwise, the following examples bearing amines in the 3-position of the oxindole core can be synthesized according to synthesis scheme 1 in analogous fashion to Examples 1 to 6.

The amide derivatives of amino acids were acquired from commercial suppliers or synthesized according to standard methods, for example according to the following procedure:

(S)—N,N-Dimethyl-2-methylamino-propionamide hydrochloride

To a solution of (S)-Boc-N-Me-Ala-OH (9.8 mmol, 2.00 g, from Bachem) in DMF (10 mL) were added 1-Hydroxy-1H-benzotriazole (10.8 mmol, 1.46 g) and EDCI (10.8 mmol, 2.08 g). The reaction mixture was stirred for 10 min before a 2M solution of dimethylamine in THF (11.8 mmol, 5.9 mL) was added. After stirring for 18 h at room temperature, water was added and the mixture was extracted several times with ethyl acetate. The combined organic layers were washed with 1N aqueous hydrochloric acid, aqueous sodium bicarbonate solution and water. After drying over magnesium sulfate, the volatiles were removed in vacuo. Yield: 1.86 g of a colorless oil (82%). The Boc-protected coupling product was dissolved in MeOH (19 mL) and treated with a 4N solution of HCl in dioxane (32.3 mmol, 8.1 mL). After stirring for 18 h at room temperature, the reaction mixture was evaporated to dryness to leave 1.41 g of a white solid (quantitative yield).

(S)-Pyrrolidine-2-carboxylic acid dimethylamide hydrochloride, (S)-Pyrrolidine-2-carboxylic acid methylamide hydrochloride, (S)-Piperidine-2-carboxylic acid dimethylamide hydrochloride, (S)-Azetidine-2-carboxylic acid dimethylamide hydrochloride, (S)-2,5-Dihydro-1H-pyrrole-2-carboxylic acid dimethylamide hydrochloride, (2S,4R)-4-Fluoro-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride, (2S,4S)-4-Hydroxy-pyrrolidine-2-carboxylic acid dimethylamide hydrochloride, (2S,4R)-4-Hydroxy-piperidine-2-carboxylic acid dimethylamide hydrochloride, N,N-Dimethyl-2-methylamino-acetamide hydrochloride, 2-Amino-N,N-dimethyl-acetamide hydrochloride, Pyrrolidine-3-carboxylic acid dimethylamide hydrochloride, (S)-2-Amino-N,N-dimethyl-propionamide hydrochloride, (S)-2-Amino-N,N-dimethyl-butyramide hydrochloride were prepared in analogous fashion.

Example 220 (S)-2-{[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dim ethyl-propionamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −197;

¹H NMR (400 MHz, DMSO-d₆) δ 8.10 (1H), 7.95 (2H), 7.85 (1H), 7.50 (1H), 7.15 (1H), 6.90 (1H), 6.75 (2H), 4.00 (1H), 3.85 (3H), 3.75 (3H), 3.25 (3H), 2.75 (3H), 2.35 (3H), 0.90 (3H); MS (API-ES, pos) m/z=603 [M+H]

Example 221 (S)-2-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylamino]-N,N-dimethyl-propionamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −152;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 7.95 (1H), 7.85 (1H), 7.50 (1H), 7.10 (1H), 7.00 (1H), 6.80 (1H), 6.75 (1H), 3.90 (3H), 3.80 (3H), 3.40 (2H), 3.25 (3H), 2.75 (3H), 2.65 (3H), 0.90 (3H); MS (API-ES, pos) m/z=589 [M+H]

Example 222 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methyl-pyridin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H-NMR (D₆-DMSO): δ=1.65(1H), 1.9(3H), 2.0(1H), 2.45(3H), 2.6(3H), 2.65(1H), 3.3(1H), 3.5(3H), 3.9(3H), 4.3(1H), 4.7(1H), 5.6(1H), 6.7(1H), 6.75(1H), 7.1(1H), 7.25(1H), 7.45(1H), 7.55(1H), 7.75(1H), 7.95(1H) and 8.15(1H) ppm.

Example 223 (2S,4R)-1-[1-Benzenesulfonyl-5-chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.45 (1H), 8.25 (2H), 8.10 (1H), 7.70-7.90 (4H), 7.45 (1H), 7.10 (1H), 7.05 (1H), 5.00 (1H), 4.45 (1H), 4.27 (1H), 3.25 (1H), 2.95 (3H), 2.70 (1H), 2.40 (3H), 2.05 (1H), 1.70 (1H); MS (API-ES, pos) m/z=571 [M+H]

Example 224 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-3-(2-oxo-1,2-dihydro-pyridin-3-yl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A solution of example 5 (0.16 mmol, 100 mg) and sodium iodide (0.32 mmol, 109 mg) in acetic acid (1 mL) was heated overnight at 40° C. The reaction mixture was diluted with ethyl acetate and washed with aqueous sodium dithionate solution, water and brine. The organic layer was dried over magnesium sulfate and concentrated in vacuo. Chromatographic purification over silica gel (gradient from 4% to 12% MeOH in dichloromethane) yielded 59 mg (60%) of a white crystalline solid.

¹H NMR (400 MHz, DMSO-d₆) δ 11.55 (1H), 7.90 (2H), 7.70 (1H), 7.40 (1H), 7.30 (1H), 7.00 (1H), 6.70 (1H), 6.65 (1H), 6.70 (1H), 4.90 (1H), 4.60 (1H), 4.30 (1H), 3.85 (3H), 3.55 (3H), 2.90 (1H), 2.60 (3H), 2.55 (3H), 2.25 (1H), 1.60 (1H); MS (API-ES, pos) m/z=617 [M+H]

Example 225 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −285;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 8.00 (1H), 7.80 (1H), 7.37 (1H), 6.90-7.15 (3H), 6.77 (1H), 6.70 (1H), 4.90 (1H), 4.55 (1H), 4.45 (1H), 3.85 (3H), 3.70 (3H), 3.40 (3H), 2.85 (1H), 2.60 (3H), 2.35 (3H), 2.15 (1H), 1.30-1.70 (2H); MS (API-ES, pos) m/z=597 [M+H]

Example 226 (S)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −210;

¹H NMR (400 MHz, DMSO-d₆) δ 8.10 (2H), 7.95 (1H), 7.80 (1H), 7.40 (1H), 7.15 (1H), 7.00 (2H), 6.77 (2H), 4.50 (1H), 3.87 (3H), 3.65 (3H), 3.50 (3H), 2.70 (3H), 2.40 (3H), 2.20 (1H), 1.75 (1H), 1.40 (3H); MS (API-ES, pos) m/z=581 [M+H]

Example 227 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −242;

¹H NMR (400 MHz, DMSO-d₆) δ 8.10 (2H), 7.95 (1H), 7.80 (1H), 7.50 (1H), 7.05 (2H), 6.80 (2H), 4.50 (1H), 3.87 (3H), 3.70 (3H), 3.50 (3H), 2.75 (1H), 2.70 (3H), 2.45 (3H), 2.20 (1H), 1.75 (1H), 1.40 (3H); MS (API-ES, pos) m/z=615 [M+H]

Example 228 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −200;

¹H-NMR (400 MHz, DMSO-d₆) δ 8.15 (1H, s br.), 8.07 (1H, m), 7.97 (1H, d), 7.67 (1H, d), 7.17 (1H, d), 7.01 (1H, t), 6.86-6.66 (3H, m), 4.87 (1H, s), 4.56 (1H, d), 4.34 (1H, sext.), 3.86 (3H, s), 3.70 (3H, s), 2.59 (3H, s br.), 2.35 (3H, s), 2.21(3H, s), 1.60 (1H, m); MS (API-ES, pos) m/z=611 [M+H]

Example 229 (2S,4R)-1-[1-Benzenesulfonyl-3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

¹H-NMR (400 MHz, CDCl₃) δ 8.27 (1H, d), 8.22 (2H, s br.), 8.03 (1H, m), 7.79 (1H, d), 7.68 (1H, t), 7.60 (2H, m), 7.10 (1H, d), 6.90 (1H, t), 6.77 (1H, s), 4.74 (1H, s br.), 4.55 (1H, m), 3.22 (3H, s br.), 2.73 (3H, s br.), 2.42 (3H, s br.), 2.20 (3H, s), 1.94 (1H, m), 1.84 (1H, s br.); MS (API-ES, pos) m/z=551 [M+H]

Example 230 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −137;

¹H-NMR (500 MHz, DMSO-d₆) δ 8.17 (1H, d), 8.06 (1H, d), 7.99 (1H, d), 7.70 (1H, d), 7.00 (1H, t), 6.94 (1H, d), 6.72 (1H, d), 6.70 (1H, s), 6.47 (1H, s), 4.70 (1H, s br.), 4.58 (1H, d), 4.36 (1H, s br.), 3.86 (3H, s), 3.72 (3H, s), 3.67 (3H, s), 3.42 (3H, s), 2.94 (1H, s br.), 2.60 (3H, m), 2.38 (3H, m), 2.20 (1H, s br.), 1.66-1.47 (2H, m); MS (API-ES, pos) m/z=627 [M+H]

Example 231 (2S,4R)-1-[1-Benzenesulfonyl-5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −192;

¹H-NMR (500 MHz, DMSO-d₆) δ 8.37 (1H, m), 8.17 (2H, d), 8.02 (1H, m), 7.76 (1H, t), 7.68 (2H, t), 7.62 (1H, d), 7.02 (1H, t), 6.90 (1H, d), 6.44 (1H, s), 4.80 (1H, s br.), 4.47 (1H, m), 4.30 (1H, s br.), 3.64 (3H, s), 3.04 (3H, s), 2.60 (1H, m br.), 2.44 (6H, s), 1.96 (1H, s br.), 1.70 (1H, m); MS (API-ES, pos) m/z=567 [M+H]

Example 232 (2S,4R)-1-[5-Cyano-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 3-Hydroxy-5-iodo-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one

A 1.7 M solution of tert-butyllithium in pentane (35 ml, 60 mmol) was added to THF (100 ml) at −78° C. 2-Bromomesitylene (4.6 ml, 30 mmol) was added dropwise and the mixture stirred at −78° C. for 1 h. 2-Methoxypyridine (3.2 ml, 30 mmol) was added at −78° C. and then the mixture was stirred at 0° C. for 1.5 h. The ice-cold solution of the lithiated 2-methoxypyridine was transferred (via a transfer needle) into an ice-cold suspension of 5-iodoisatin (4.1 g, 15 mmol) in THF (150 ml). The reaction mixture was allowed to warm to room temperature and then saturated ammonium chloride solution was added. The mixture was extracted three times with ethyl acetate, and the collected extracts were washed with saturated brine. The organic phase was dried over magnesium sulfate, filtered and concentrated under reduced pressure. Purification by crystallization from dichloromethane yielded 2.9 g of the intermediate.

MS (API-ES, pos) m/z=383 [M+H]

B) (2S,4R)-4-Hydroxy-1-[5-iodo-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide

The chlorination/amination sequence was performed as described for examples 5 and 6 (step B and C). The two diastereomers were separated by flash chromatography over silica gel (gradient from 4% to 10%. MeOH in dichloromethane). The major diastereomer was the later eluting one and led to the required levorotatory product.

MS (API-ES, pos) m/z=523 [M+H]

C) (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-5-iodo-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

The sulfonylation was performed as described for example 5 (step D).

MS (API-ES, pos) m/z=723 [M+H]

D) Example 232

(2S,4R)-1-[5-Cyano-1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A solution of Example 232C (0.69 mmol, 500 mg), zinc zyanide (0.69 mmol, 81 mg) and palladium(0)-tetrakis-triphenylphosphine (15 mg) in DMF (3 mL) was heated at 75° C. for 24 h. The reaction mixture was poured into water and extracted with ethyl acetate. The organic layer was washed with water and brine. After drying over magnesium sulfate, the volatiles were evaporated in vacuo. The remaining oil was triturated with dichloromethane and the white solid was collected by filtration. The crude product was purified by flash chromatography over silica gel (gradient from 4% to 10% MeOH in dichloromethane). Yield: 315 mg of the desired product as a white solid (73%).

¹H NMR (400 MHz, DMSO-d₆) δ 8.32 (1H), 8.08 (1H), 8.00 (1H), 7.92 (1H), 7.86 (1H), 7.54 (1H), 7.05 (1H), 6.72-6.80 (2H), 4.98 (1H), 4.55 (1H), 4.32 (1H), 3.88 (3H), 3.73 (3H), 3.03 (1H), 2.45 (3H), 1.55-1.80 (2H); MS (API-ES, pos) m/z=622 [M+H]

Example 233 (S)-1-[5-Cyano-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, 1:1 mixture of diastereomers

MS (API-ES, pos) m/z=606 [M+H]

Example 234 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(3-methoxy-pyridin-4-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(3-methoxy-pyridin-4-yl)-1,3-dihydro-indol-2-one

A 1.7 M solution of tert-butyllithium in pentane (57.8 mL) was added to THF (200 ml) at −78° C. 2-Bromomesitylene (3.6 mL) was added dropwise, keeping the temperature below −60° C., and the mixture stirred at −78° C. for 1 h. 3-Methoxypyridine (3.6 mL) was added dropwise at −78° C. and then the mixture was allowed to warm to −5° C. over 2 h. The reaction mixture was re-cooled to −78° C. and a slurry of 5-chloroisatin (3.26 g) in THF (100 mL) was added portionwise keeping the temperature below −60° C. The reaction mixture was stirred at −78° C. for 1 h. The cooling bath was removed and the reaction mixture was stirred for 30 min. The reaction mixture was quenched with 10% aqueous ammonium chloride solution and extracted several times with ethyl acetate. The combined organic layers were washed with water, dried over magnesium sulfate and evaporated to low volume. Upon standing, 0.73 g of a pale yellow solid separated which was filtered off, washed with ethyl acetate and dried in vacuo.

The subsequent steps were performed in analogous fashion to Examples 5 and 6.

Example 234

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −212;

¹H NMR (400 MHz, DMSO-d₆) δ 8.25 (2H), 8.00 (1H), 7.85 (1H), 7.75 (1H), 7.45 (1H), 7.00 (1H), 6.75 (2H), 4.95 (1H), 4.55 (1H), 4.35 (1H), 3.85 (3H), 3.75 (3H), 3.40 (3H), 3.00 (1H), 2.55 (3H), 2.40 (3H), 2.30 (1H), 1.65 (1H); MS (API-ES, pos) m/z=631 [M+H]

Example 235 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-3-pyridin-2-yl-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −23;

¹H-NMR (400 MHz, CDCl₃) δ 8.13 (1H, d), 8.06 (1H, d), 7.99 (1H, d), 7.88 (1H, d), 7.70 (1H, t), 7.09 (1H, m), 6.61 (1H, dd), 6.47 (1H, s), 4.35 (1H, s br.), 3.98 (1H, m), 3.89 (3H, s), 3.54 (dd, 1H), 3.46 (3H, s), 2.74 (3H, s), 2.67 (1H, d), 2.55 (3H, s), 2.11 (1H, m), 1.91 (1H, m); MS (API-ES, pos) m/z=601 [M+H]

Example 236 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-1-(4-methoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.95 (1H), 8.10 (2H), 7.70 (1H), 7.40 (1H), 7.20 (3H), 5.05 (1H), 4.40 (1H), 4.25 (1H), 3.85 (6H), 3.25 (1H), 3.15 (3H), 2.75 (1H), 2.35 (3H), 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=632 [M+H]

Example 237 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −195;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.05 (1H), 7.95 (1H), 7.85 (1H), 7.50 (1H), 7.15 (1H), 6.85 (1H), 6.75 (2H), 3.70-3.95 (8H), 2.95 (3H), 2.65 (3H), 2.20 (3H), 1.85 (1H), 1.30-1.70 (5H); MS (API-ES, pos) m/z=629 [M+H]

Example 238 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2,6-dimethoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

A) 5-Chloro-3-hydroxy-3-(2,6-dimethoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one

To a stirred solution of 2,6-dimethoxypyridine (50 mmol, 6.61 mL) in THF (100 mL) was added slowly a 1.6 M solution of n-butyllithium in hexanes (55 mmol, 34.4 mL) at −78° C. The mixture was allowed to warm slowly to 10° C. and kept at this temperature for 30 min. The reaction mixture was re-cooled to −78° C. and a slurry of 5-chloroisatin (20 mmol, 3.63 g) in THF (150 mL) was added portionwise, keeping the temperature below −60° C. The reaction was allowed to come to room temperature. The mixture was quenched with 10% aqueous ammonium chloride solution and extracted several times with ethyl acetate. The combined organic layers were washed with water, dried over magnesium sulfate and evaporated in vacuo. Recrystallization from ethyl acetate yielded 4.56 g (71%) of the desired intermediate as a white crystalline solid (71%).

MS (API-ES, pos) m/z=321 [M+H]

The subsequent steps were performed as described for Example 5 and Example 6.

Example 238

¹H NMR (400 MHz, DMSO-d₆) δ 8.05 (1H), 8.00 (1H), 7.80 (1H), 7.45 (1H), 7.00 (1H), 6.75 (2H), 6.40 (1H), 4.90 (1H), 4.55 (1H), 4.30 (1H), 3.85 (3H), 3.80 (3H), 3.70 (3H), 3.40 (3H), 2.90 (1H), 2.55 (3H), 2.45 (3H), 2.20 (1H), 1.60 (2H); MS (API-ES, pos) m/z=661 [M+H]

Example 239 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-ethoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

Example 239 was synthesized in analogy to Example 5, substituting 2-methoxypyridine with 2-ethoxypyridine in step A.

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −228;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 8.00 (1H), 7.80 (1H), 7.45 (1H), 7.00 (2H), 6.75 (2H), 4.95 (1H), 4.55 (1H), 4.30 (1H), 3.95 (2H), 3.85 (3H), 3.70 (3H), 2.90 (1H), 2.55 (3H), 2.45 (3H), 2.25 (1H), 1.60 (1H), 0.80 (3H); MS (API-ES, pos) m/z=645 [M+H]

Example 240 (2S,4R)-1-[5-Chloro-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.40 (1H), 8.15 (2H), 8.05 (1H), 7.70 (1H), 7.40 (1H), 7.20 (2H), 7.10 (1H), 7.00 (1H), 5.00 (1H), 4.45 (1H), 4.30 (1H), 3.85 (3H), 3.20 (1H), 3.05 (3H), 2.65 (1H), 2.40 (3H), 2.05 (1H), 1.65 (1H); MS (API-ES, pos) m/z=601 [M+H]

Example 241 (2S,4R)-1-[5-Chloro-1-(2-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.25 (1H), 8.10 (2H), 7.75 (2H), 7.45 (1H), 7.30 (1H), 7.20 (1H), 7.05 (2H), 4.95 (1H), 4.55 (1H), 4.35 (1H), 3.75 (3H), 3.00 (1H), 2.55 (3H), 2.45 (3H), 2.25 (1H), 1.65 (2H); MS (API-ES, pos) m/z=601 [M+H]

Example 242 (2S,4R)-1-[5-Cyano-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.50 (1H), 8.15 (2H), 8.10 (1H), 7.85 (2H), 7.50 (1H), 7.20 (2H), 7.10 (1H), 5.05 (1H), 4.45 (1H), 4.30 (1H), 3.85 (3H), 3.20 (1H), 3.05 (3H), 2.70 (1H), 2.35 (3H), 2.05 (1H), 1.65 (1H); MS (API-ES, pos) m/z=592 [M+H]

Example 243 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-5-iodo-3-(3-methoxy-pyrazin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −9;

¹H-NMR (400 MHz, CDCl₃) δ 8.17 (1H, d), 8.12 (2H, dd), 7.72 (1H, d), 7.63 (1H, d), 7.16 (1H, s), 6.58 (1H, dd), 6.51 (1H, s), 5.48 (1H, s br.), 4.71 (1H, t), 4.26 (1H, s), 3.83 (6H, d), 3.59 (3H, s), 3.32 (1H, dd), 3.10 (1H, d), 2.88 (3H, s), 2.56 (3H, s), 2.22 (1H, m sym.), 1.74 (1H, m sym.)

Example 244 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2,4-dimethoxy-pyrimidin-5-yl)-5-methoxy-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.70 (1H), 8.00 (1H), 7.65 (1H), 6.95 (1H), 6.75 (2H), 6.60 (1H), 4.90 (1H), 4.60 (1H), 4.30 (1H), 3.85 (6H), 3.70 (6H), 3.40 (3H), 3.00 (1H), 2.55 (3H), 2.45 (3H), 2.25 (1H), 1.65 (1H); MS (API-ES, pos) m/z 658 [M+H]

Example 245 (2S,4R)-1-[1-(2,4-Dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-5-trifluoromethoxy-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.25 (1H), 8.10 (1H), 8.00 (1H), 7.90 (1H), 7.45 (1H), 7.05 (1H), 7.00 (1H), 6.80 (1H), 6.75 (1H), 4.95 (1H), 4.55 (1H), 4.35 (1H), 3.85 (3H), 3.70 (3H), 3.40 (3H), 2.90 (1H), 2.60 (3H), 2.40 (3H), 2.20 (1H), 1.65 (1H); MS (API-ES, pos) m/z=681 [M+H]

Example 246 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −207;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 8.00 (1H), 7.75 (1H), 7.45 (1H), 7.10 (2H), 6.75 (2H), 5.25 (1H), 4.60 (1H), 3.85 (3H), 3.75 (3H), 3.40 (1H), 3.25 (3H), 2.85 (1H), 2.45 (6H), 2.30 (1H), 1.85 (1H); MS (API-ES, pos) m/z=633 [M+H]

Example 247 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-2,5-dihydro-1H-pyrrole-2-carboxylic acid dimethylamide, mixture of diastereomers

MS (API-ES, pos) m/z=613 [M+H]

Example 248 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid methyl ester, mixture of diastereomers Example 249

(S)-1-[5-Chloro-3-(6-chloro-2-methoxy-pyridin-3-yl)-1-(2,4-dimethoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers

Example 250 (2S,4R)-1-[1-(Benzo[b]thiophene-3-sulfonyl)-5-chloro-3-(2-methoxy-phenyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide trifluoroacetate

MS (ESI, pos) m/z=626 [M+H]

Example 251 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(2-methyl-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

Sodium acetoxyborohydride (0.36 mmol, 76.27 mg) was added to a solution of Example 61 (0.24 mmol, 0.15 g), acetic acid (0.24 mmol, 14.4 mg) and aq. formaldehyde (37%, 0.26 mmol, 21.42 mg). The mixture was stirred at RT for 12 h and evaporated in vacuo. The residue was solved in H₂O and extracted with ethyl acetate. The organic phase was dried, filtrated and evaporated. The crude product was then purified on a column of silica gel eluted with 5% MeOH in CH₂Cl₂ to afford 100 mg of the required product.

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −112;

MS (API-ES, pos) m/z=639 [M+H]

Example 252 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(4-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.65 (1H), 8.20 (1H), 8.00 (1H), 7.80 (1H), 7.65 (1H), 7.45 (1H), 7.30 (1H), 7.00 (1H), 6.95 (1H), 6.85 (1H), 4.95 (1H), 4.50 (1H), 4.30 (1H), 3.10 (3H), 2.40 (3H), 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=585 [M+H]

Example 253 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(6-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (1H), 8.00 (1H), 7.80 (1H), 7.65 (1H), 7.40 (1H), 7.30 (1H), 7.00 (1H), 6.95 (1H), 6.85 (1H), 4.90 (1H), 4.50 (1H), 4.30 (1H), 3.15 (3H), 2.55 (3H), 2.40 (4H), 1.60 (1H); MS (API-ES, pos) m/z=585 [M+H]

Example 254 (2S,4R)-1-[5-Fluoro-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.15 (1H), 8.10 (1H), 8.00 (1H), 7.70 (1H), 7.30 (2H), 7.20 (1H), 7.00 (1H), 6.80 (2H), 4.95 (1H), 4.50 (1H), 4.30 (1H), 2.95 (4H), 2.45 (3H), 2.00 (1H), 1.70 (1H); MS (API-ES, pos) m/z=560 [M+H]

Example 255 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-azetidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.10 (1H), 8.05 (2H), 7.85 (1H), 7.50 (1H), 7.00 (2H), 6.80 (2H), 4.80 (1H), 3.90 (3H), 3.75 (3H), 3.50 (3H), 2.80 (1H), 2.65 (4H), 2.35 (4H), 1.60 (1H); MS (API-ES, pos) m/z=601 [M+H]

Example 256 (2S,4R)-1-[5-Chloro-3-(2-methoxy-phenyl)-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −149;

¹H NMR (400 MHz, DMSO-d₆) δ 8.05 (1H), 7.85 (1H), 7.75 (1H), 7.40 (1H), 7.30 (1H), 7.15 (1H), 7.00 (1H), 6.90 (2H), 4.95 (1H), 4.55 (1H), 4.35 (1H), 3.85 (3H), 3.25 (3H), 2.35 (4H), 1.65 (1H); MS (API-ES, pos) m/z=606 [M+H]

Example 270 (2S,4R)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −110;

¹H NMR (400 MHz, DMSO-d₆) δ 8.45 (1H), 8.17 (1H), 8.07 (2H), 7.70 (1H), 7.43 (1H), 7.30 (1H), 7.03-7.15 (2H), 5.03 (1H), 4.45 (1H), 4.30 (1H), 3.25, 3.05 (3H), 2.70 (1H), 2.40 (3H), 2.05 (1H), 1.70 (1H); MS (API-ES, pos) m/z=577 [M+H]

Example 271 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.85 (1H), 8.40 (1H), 8.00 (1H), 7.75 (1H), 7.45 (1H), 7.05 (1H), 6.95 (1H), 6.75 (2H), 4.95 (1H), 4.60 (1H), 4.35 (1H), 3.85 (3H), 3.75 (3H), 3.35 (3H), 3.00 (1H), 2.55 (3H), 2.45 (3H), 1.60 (2H); MS (API-ES, pos) m/z=552 [M+H]

Example 272 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −166; ¹H-NMR (500 MHz, DMSO-d₆) δ 8.79 (1H, d), 8.42 (2H, m), 8.28 (1H, t), 8.05 (1H, d), 7.77 (1H, m), 7.68 (1H, d), 7.14 (1H, d), 7.04 (1H, t), 6.77 (1H, s), 4.80 (1H, s), 4.44 (1H, m), 4.33 (1H, m), 3.25 (3H, s), 3.15 (3H, s), 2.58 (1H, s br.), 2.43 (3H, s), 2.39 (3H, s), 2.19 (3H, s), 1.85 (1H, s br.), 1.66 (1H, m); MS (API-ES, pos) m/z=552 [M+H]

Example 273 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-5-methyl-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −157;

¹H-NMR (400 MHz, CDCl₃) δ 8.25 (1H, s br.), 8.03 (2H, m), 7.72 (2H, m), 7.18 (1H, t), 7.09 (1H, d), 6.91 (1H, t), 6.81 (1H, s), 4.76 (1H, s br.), 4.57 (1H, m), 3.35 (3H, s br.), 2.72 (3H, s br.), 2.45 (3H, s), 2.22 (3H, s), 1.96 (2H, m); MS (API-ES, pos) m/z=557 [M+H]

Example 274 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-5-methyl-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −209;

¹H-NMR (400 MHz, CDCl₃) δ 8.54 (1H, s), 8.30 (1H, d), 8.20 (1H, s br.), 8.03 (1H, m), 7.80 (2H, m), 7.08 (1H, d), 6.90 (1H, t), 6.83 (1H, s), 4.74 (1H, s br.), 4.58 (1H, quint.), 3.58 (3H, s br.), 2.72 (3H, s br.), 2.44 (3H, s), 2.41 (3H, s), 2.21 (3H, s), 1.88 (1H, m), 1.68 (4H, s); MS (API-ES, pos) m/z=566 [M+H]

Example 275 (2S,4R)-4-Hydroxy-1-[5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(pyridine-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −105;

¹H-NMR (400 MHz, DMSO-d₆) δ 8.81 (1H, d), 8.31 (1H, d), 8.22 (1H, t), 8.05 (1H, d), 7.82 (1H, m), 6.94 (1H, d), 6.48 (1H, s), 4.96 (1H, s br.), 4.47 (1H, s br.), 4.31 (1H, s br.), 3.66 (3H, s), 3.17 (3H, m), 2.38 (3H, s), 1.63 (1H, m); MS (API-ES, pos) m/z=568 [M+H]

Example 276 (2S,4R)-4-Hydroxy-1-[5-methoxy-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −175; ¹H-NMR (400 MHz, DMSO-d₆) δ 8.41 (1H, s br.), 8.15 (1H, d), 8.04 (2H, m), 7.60 (1H, d), 7.30 (1H, t), 7.07 (1H, t), 6.92 (1H, d), 6.47 (1H, s), 4.99 (1H, s br.), 4.47 (1H, s br.), 4.31 (1H, s br.), 3.65 (3H, s), 3.02 (3H, s), 2.41 (6H, s), 2.00 (1H, m br.), 1.69 (1H, m); MS (API-ES, pos) m/z=573 [M+H]

Example 277 (2S,4R)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.50 (1H), 8.20 (1H), 8.15 (1H), 8.10 (1H), 7.85 (2H), 7.55 (1H), 7.35 (1H), 7.10 (1H), 5.05 (1H), 4.50 (1H), 4.30 (1H), 3.30 (1H), 3.05 (3H), 2.75 (1H), 2.35 (3H), 2.05 (1H), 1.70 (1H); MS (API-ES, pos) m/z=568 [M+H]

Example 278 (S)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −242;

¹H NMR (400 MHz, DMSO-d₆) δ 8.20 (1H), 8.10 (2H), 8.05 (1H), 7.75 (1H), 7.45 (1H), 7.35 (1H), 7.10 (2H), 4.40 (1H), 3.10 (3H), 3.05 (1H), 2.00 (1H), 1.60-1.90 (2H); MS (API-ES, pos) m/z=561 [M+H]

Example 279 (2S,4R)-4-Hydroxy-1-[5-methoxy-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide fumarate

m/z=582 [M+H]

Example 280 (2S,4R)-1-[5-Chloro-3-(2,6-dimethoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.30 (1H), 8.20 (1H), 8.10 (1H), 7.70 (1H), 7.40 (1H), 7.30 (1H), 7.05 (1H), 6.45 (1H), 5.00 (1H), 4.45 (1H), 4.30 (1H), 3.80 (3H), 3.25 (1H), 3.05 (3H), 2.70 (1H), 2.40 (3H), 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=607 [M+H]

Example 281 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.95 (1H), 8.20 (1H), 8.10 (1H), 7.70 (1H), 7.45 (1H), 7.30 (1H), 7.25 (1H), 5.05 (1H), 4.45 (1H), 4.25 (1H), 3.90 (3H), 3.15 (3H), 2.80 (1H), 2.35 (3H), 2.05 (1H), 1.65 (1H); MS (API-ES, pos) m/z=608 [M+H]

Example 282 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.90 (1H), 8.65 (1H), 8.20 (1H), 8.05 (1H), 7.75 (1H), 7.45 (1H), 7.25 (1H), 5.05 (1H), 4.40 (1H), 4.25 (1H), 3.90 (3H), 3.25 (3H), 2.70 (1H), 2.45 (3H), 2.35 (3H), 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=617 [M+H]

Example 283 (2S,4R)-4-Hydroxy-1-[5-iodo-3-(3-methoxy-pyrazin-2-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −11;

¹H-NMR (400 MHz, CDCl₃) δ 8.14 (3H, m), 7.73 (1H, m), 7.66 (2H, s), 7.19 (1H, t), 7.12 (1H, s), 5.54 (1H, s br.), 4.58 (1H, t), 4.25 (1H, s), 3.40 (3H, s), 3.29 (1H, dd), 3.17 (1H, d), 2.80 (3H, s), 2.52 (3H, s), 2.27 (1H, m sym.), 1.70 (1H, m sym.); MS (API-ES, pos) m/z=671 [M+H]

Example 284 (2S,4R)-4-Hydroxy-1-[5-iodo-3-(3-methoxy-pyrazin-2-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −8;

¹H-NMR (400 MHz, CDCl₃) δ 8.55 (1H, s), 8.38 (1H, d), 8.12 (2H, m), 7.80 (2H, t), 7.65 (1H, d), 7.15 (1H, s), 4.56 (1H, t), 4.24 (1H, s), 3.52 (3H, s), 3.30 (1H, dd), 3.12 (1H, d), 2.77 (3H, s), 2.47 (6H, d), 2.26 (1H, m sym.), 1.71 (1H, m sym.); MS (API-ES, pos) m/z=679 [M+H]

Example 285 (2S,4R)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.35 (1H), 8.10 (2H), 7.80 (1H), 7.45 (1H), 7.20 (1H), 7.05 (1H), 7.00 (1H), 5.00 (1H), 4.50 (1H), 4.35 (1H), 3.90 (1H), 3.25 (3H), 3.15 (1H), 2.45 (3H), 1.85 (1H), 1.65 (1H); MS (API-ES, pos) m/z=607 [M+H]

Example 286 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-5-trifluoromethoxy-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.35 (1H), 8.10 (1H), 7.85 (1H), 7.40 (1H), 7.20 (1H), 7.05 (1H), 6.95 (1H), 5.00 (1H), 4.50 (1H), 4.35 (1H), 3.90 (3H), 3.25 (3H), 3.15 (1H), 2.40 (3H), 1.85 (1H), 1.70 (1H); MS (API-ES, pos) m/z=657 [M+H]

Example 287 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of the two diastereomers

MS (API-ES, pos) m/z=653 [M+H]

Example 288 (2S,4R)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(quinoline-8-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

¹H NMR (400 MHz, DMSO-d₆) δ 8.85 (1H), 8.75 (1H), 8.60 (1H), 8.45 (1H), 8.30 (1H), 8.20 (1H), 8.05 (1H), 7.90 (1H), 7.70 (1H), 7.50 (1H), 7.00 (2H), 4.80 (1H), 4.55 (1H), 4.30 (1H), 3.05 (1H), 2.67 (3H), 1.55-1.90 (2H); MS (API-ES, pos) m/z=622 [M+H]

Example 289 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

[α]_(D) ^(20° C.) (c=0.1, CHCl₃): −178;

¹H NMR (400 MHz, DMSO-d₆) δ 8.65 (1H), 8.40 (1H), 8.25 (1H), 8.10 (1H), 8.00 (1H), 7.80 (1H), 7.45 (1H), 7.05 (2H), 5.00 (1H), 4.45 (1H), 4.30 (1H), 3.20 (3H), 2.65 (1H), 2.45 (3H), 2.40 (3H), 2.38, 2.00 (1H), 1.65 (1H); MS (API-ES, pos) m/z=586 [M+H]

Example 302 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-3-pyrrolidin-1-yl-1,3-dihydro-indol-2-one Example 303 5-Chloro-3-(1,3-dihydro-isoindol-2-yl)-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one Example 304 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-((R)-3-hydroxy-pyrrolidin-1-yl)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one Example 305 3-Amino-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one Example 306 (2S,4R)-4-Hydroxy-1-[3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 307 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-((S)-2-methoxymethyl-pyrrolidin-1-yl)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 308 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid amide, levorotatory diastereomer Example 309 2-{[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dimethyl-acetamide Example 310 2-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylamino]-N,N-dimethyl-acetamide Example 311 (2S,4R)-1-[5-Chloro-3-(3-methyl-pyridin-2-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide methanesulfonate, levorotatory diastereomer Example 312 (2S,4R)-1-[5-Chloro-1-(5-methyl-pyridine-2-sulfonyl)-3-(3-methyl-pyridin-2-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide methanesulfonate, levorotatory diastereomer Example 313 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-3-((S)-2-trifluoromethyl-pyrrolidin-1-yl)-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 314 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-3-((S)-2-pyrrolidin-1-ylmethyl-pyrrolidin-1-yl)-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 315 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid tert-butyl ester, levorotatory diastereomer Example 316 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-3-[(S)-2-(4-methyl-piperazine-1-carbonyl)-pyrrolidin-1-yl]-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 317 (S)-4-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-3-dimethylcarbamoyl-piperazine-1-carboxylic acid tert-butyl ester, levorotatory diastereomer Example 318 (2S,4R)-1-[5-Chloro-3-(2-ethoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 320 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperazine-2-carboxylic acid dimethylamide trifluoroacetate Example 321 (2S,4R)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 322 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-3-[(S)-2-(pyrrolidine-1-carbonyl)-pyrrolidin-1-yl]-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 324 (2S,4R)-1-[5-Chloro-3-(2,4-dimethoxy-pyrimidin-5-yl)-1-(3-methoxy-thiophene-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 325 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid methylamide Example 326 1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-3-carboxylic acid dimethylamide, mixture of diastereomers Example 327 5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-dimethylamino-1-methyl-ethylamino)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 328 (S)-1-[5-Cyano-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 329 (S)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 330 (S)-2-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylamino]-N,N-dimethyl-butyramide, levorotatory diastereomer Example 331 (S)-1-[5-Chloro-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 332 (2S,4R)-1-[5-Chloro-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 334 (2S,4R)-1-[5-Chloro-3-(2,6-dimethoxy-pyridin-3-yl)-1-(4-methoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 335 1-[5-Cyano-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 336 (2S,4R)-1-[5-Chloro-3-(2-ethoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 337 (2S,4R)-1-[5-Chloro-3-(2-ethoxy-phenyl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 339 (2S,4R)-1-[5-Cyano-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-2-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 340 (2S,4R)-1-[5-Cyano-3-(2-methoxy-phenyl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 341 (2S,4R)-1-[3-(2-Ethoxy-phenyl)-5-methoxy-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 342 (2S,4R)-1-[5-Cyano-3-(2-methoxy-phenyl)-2-oxo-1-(thiophene-3-sulfonyl)-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 343 (S)-2-{[5-Cyano-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dimethyl-propionamide, mixture of diastereomers Example 344 (S)-2-{([5-Cyano-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dimethyl-propionamide, mixture of diastereomers Example 345 (S)-2-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylamino]-3, N,N-trimethyl-butyramide, levorotatory diastereomer Example 346 (S)-1-[5-Cyano-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 347 (S)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 348 (2S,4R)-4-Hydroxy-1-[1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-5-trifluoromethoxy-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 349 (S)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 350 (S)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 351 2-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-ylamino]-2,N,N-trimethyl-propionamide Example 352 (2S,4R)-1-[5-Cyano-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 353 (2S,4R)-1-[5-Cyano-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 354 (2S,4R)-1-[5-Cyano-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 355 (2S,4R)-1-[5-Chloro-3-(2-ethoxy-pyridin-3-yl)-1-(4-methoxy-benzenesulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, mixture of diastereomers Example 356 (S)-2-{[5-Chloro-1-(4-methoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dimethyl-propionamide, levorotatory diastereomer Example 357 (S)-2-{[5-Chloro-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-methyl-amino}-N,N-dimethyl-propionamide, levorotatory diastereomer Example 358 (2S,4R)-1-[5-Chloro-3-(2-methoxy-pyridin-3-yl)-1-(5-methyl-pyridine-2-sulfonyl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 359 3-[(S)-2-(Azetidine-1-carbonyl)-pyrrolidin-1-yl]-5-chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-1,3-dihydro-indol-2-one, levorotatory diastereomer Example 360 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-pyrrolidine-2-carboxylic acid ethyl-methyl-amide, levorotatory diastereomer Example 361 (2S,4S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 362 (2S,4S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-methoxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 363 (2S,4S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-phenoxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 364 (2S,4S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 365 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-methoxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 366 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-phenoxy-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 367 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4,4-difluoro-pyrrolidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 368 (2S,4R)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-hydroxy-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 369 (2S,4S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4-fluoro-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer Example 370 (S)-1-[5-Chloro-1-(2,4-dimethoxy-benzenesulfonyl)-3-(2-methoxy-pyridin-3-yl)-2-oxo-2,3-dihydro-1H-indol-3-yl]-4,4-difluoro-piperidine-2-carboxylic acid dimethylamide, levorotatory diastereomer

In the following Table 2 characteristic mass-spectroscopic data are shown for selected examples.

TABLE 2 Characteristic mass-spectroscopic data for selected examples (ESI, positive mode) Example # Molecular ion peak 1 657 2 657 3 662 4 662 5 631 6 631 9 631 10 631 13 632 28 621 29 576 30 576 31 610 32 690 33 690 35 646 37 626 38 674 39 574 40 588 41 622 42 602 43 650 44 589 45 605 46 650 47 571 48 649 53 663 54 599 55 571 56 656 57 663 59 684 60 641 61 625 62 480 63 633 64 481 65 592 66 670 68 711 70 702 75 690 

1. A compound of the formula (I)

in which A is an aromatic heteromonocyclic ring, where the heterocycles are 5- or 6-membered rings and comprise up to 4 heteroatoms selected from the group consisting of N, O and S, where not more than one of the heteroatoms is an oxygen or sulfur atom, and A may be substituted by radicals R¹¹, R¹² and/or R¹³, where R¹¹, R¹² and R¹³ at each occurrence are selected independently of one another from the group consisting of hydrogen chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, R³ and R⁴ are selected independently of one another from the group consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, or R³ and R⁴ are connected to give -CH=CH-CH=CH-, -(CH₂)₄- or -(CH₂)₃-, R⁵ is

W is selected from the group consisting of NR⁵⁴, NR⁵⁴-(C₁-C₄-alkylen) and a bond, R⁵⁴ is independently selected from the group consisting of hydrogen, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, phenyl and C₁-C₄-alkylen-phenyl, where the phenyl ring may be substituted by up to two radicals R⁵⁹, R⁵⁹ is independently selected from the group consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, R⁶³ is independently of one another from the group consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C₄-alkyl, O-phenyl, O-C₁-C₄-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C₄-alkyl)₂, R⁶ and R⁷ are selected independently of one another from the group consisting of hydrogen, chlorine, bromine, iodine, fluorine, CN, CF₃, OCF₃, NO₂, OH, O-C₁-C4-alkyl atoms, O-phenyl, O-C₁-C4-alkylen-phenyl, phenyl, C₁-C₆-alkyl, C₂-C₆-alkenyl, C₂-C₆-alkynyl, NH₂, NH(C₁-C₄-alkyl) and N(C₁-C4-alkyl)₂, and their tautomeric forms, enantiomeric and diastereomeric forms thereof.
 2. The compound of claim 1, wherein A is an aromatic heteromonocyclic system comprising 1 or 2 heteroatoms, where one of the 2 heteroatoms is nitrogen.
 3. The compound of claim 1, wherein A is selected from the group consisting of pyrimidine, pyridine, pyridazine, pyrazine, thiazole, imidazole, thiophene-and furan.
 4. A pharmaceutical composition comprising a compound as claimed in claim 1 and a pharmaceutically acceptable carrier. 